Practice problems for the 2nd exam


 Aron Butler
 11 months ago
 Views:
Transcription
1 Practice problems for the 2nd exam Show your work and the solutions so the instructor can see how much you put efforts to understand. This will be one of your credits toward your final grade. 1. A 4.60kg sled is pulled across a smooth ice surface (noninclined). The force acting on the sled is of magnitude 6.20 N and points in a direction 35.0 o above the horizontal. If the sled starts at rest, how fast is it going after being pulled for 1.15 s? [Conceptual note: Can you obtain the freebody diagram? What if the surface is not smooth?] 2. The coefficient of static friction is between the object and surface as shown. The object starts to move by a 4.50N force. Find the mass of the object. [Conceptual note: How does the freebody diagram look like?] 3. The weight of an object on the planet, Neptune, is found as 62.0 N. Find the mass of the object knowing that the gravitational acceleration on the Neptune is 13.3 m/s 2. [Conceptual note: Then, can you find the weight on the Earth?] 4. Find the normal force when you push down the object as shown. The magnitude of the force vector shown is 16.0 N, and the angle, θ, is 35.0 o. The mass of the object on the table is 3.02 kg. [Conceptual note: How about if the angle given is measured from the vertical?] 5. Two objects are connected by a cord as shown. Draw the force vectors, and set up the equations of motion for the motional and its perpendicular axes. The coefficient of kinetic friction between the block and table is µ k. (Do not solve the equations.) [Conceptual note: Do you remember the procedure to derive the equations of motion?] M m 6. An object (the mass = m) slides down on the inclined surface. Draw the force vectors on the object shown; set up the equations of motion for two axes; and then solve for the acceleration, knowing that θ and µ k are 35 o and 0.20, respectively. [Conceptual note: Note that drawing the magnitude of each vector is also important. What if there is no friction?]
2 7. There is a spring and hung vertically from ceiling. If you hang a 1.72kg mass to the spring, the spring is elongated by m. What is the spring constant? [Conceptual note: Do you know the name of this law?] 8. A ship propelled by a 21.0N force. Due to the force, the energy per unit time is 4,600 W. Find the velocity of the ship. [Conceptual note: What is the name of the physical quantity of energy per unit time?] 9. The work done by the force shown is 5.30 J. The magnitude of the force and the displacement are 3.15 N and 8.28 m, respectively. Find the angle shown in the figure. [Conceptual note: How about if the angle is given from the horizontal?] 10. A ball revolves on a circular track with 5.0 times per second. Knowing the speed of the ball as 3.2 m/s, find the radius of the track. [Conceptual note: What is the difference between frequency and period?] 11. Use the conservation of energy. If you drop a 1.20kg object from 5.60m height. Find the velocity at 2.20m height? [Conceptual note: What if the potential energy is different, such as spring?] 12. An 82.0kg mountain climber is in the final stage of ascent of 4301mhigh Pikes Peak. What is the change in gravitational potential energy as the climber gains the last m of altitude? (Let PE = 0 be at sea level.) [Conceptual note: Does this depend on the height of mountains?] 13. With a uniform circular motion, the acceleration directed to the center of the motion is found as 0.85 m/s 2. The radius of the circle is 0.51 m. Find the time for one cycle of this motion. [Conceptual note: Can you also find how many times it revolves per second?]
3 14. Calculate the amount of power to lift an 80kg box vertically upward at a uniform speed of 0.45 m/s. [Conceptual note: Can you calculate the total energy if it takes 30 seconds to lift at certain level?] 15. A spring, whose spring constant is 6.05 N/m, is hanged from ceiling with a kg object. If it is stretched from the equilibrium position by m, what is the maximum speed of the motion after releasing it? [Conceptual note: Can you describe the difference between force and energy with a spring?] 16. There are two planets, whose masses are kg and kg. The distance between them is m. Knowing that the universal gravitation constant is N m 2 /kg 2, find the gravitational force between these planets. [Conceptual note: In principle, any object having mass experiences a gravitational force from the other mass.] 17. Find the minimum angle at which the roadbed has to be banked so that your car driving at 20.0 m/s can securely negotiate the curve. The radius of the curve is m. [Conceptual note: Do you know that the horizontal component of the normal force is responsible for holding the car in this frictionless banked curve?] 18. A 1000kg car travels at 14.0 m/s. How much work is needed to stop the car in 10 seconds? [Conceptual note: What is the relationship between work and kinetic energy?] 19. A kg glass of water is slid on a horizontal surface. The initial speed is m/s. If the glass comes to rest with constant acceleration in m/s 2, what is the coefficient of kinetic friction between the glass and the table? Use Newton s equation of motion to solve this. [Conceptual note: Can you also look at this with a perspective from the workenergy theorem?]
4 20. The mass of the object is kg. The initial velocity is m/s. At the final point, the object stops. Knowing that the coefficient kinetic friction is 0.038, find the distance the object travels by using the WorkEnergy theorem. [Conceptual note: Can you also look at this with a perspective from Newton s equation of motion?] 21. The mass of the spacecraft is kg and the mass of astronaut is 92 kg. The astronaut exerts a force of +36 N on the spacecraft. Find the acceleration of the astronaut. (Assume that there is no gravity.) [Conceptual note: How about the acceleration of the spacecraft?] 22. There is a planet. The size is three times as large as that of the Earth. The mass is twice as large as that of the Earth. Find the gravitational acceleration of the planet. [Conceptual note: How does the gravitational acceleration depend on the mass and the radius of a planet?] 23. Find the resultant force of the two forces pulling the wall as shown in the figure. The magnitude of each force is 23.0 N and the angle θ is 17.0 o. [Conceptual note: When the block hanged from a ceiling by two ropes with different angles, can you solve the problem?] 24. An object (0.25 kg) attached to a string is rotating in a horizontal circle uniformly. The radius of the motion is 0.50 m. Knowing that it revolves twice a second, what is the tension in the string? [Conceptual note: What is the definition of frequency? Do you notice that this tension is equivalent with centripetal force?] 25. An ice cube is placed in a microwave oven. Suppose the oven delivers 255 W of power to the ice cube and that it takes 47.0 s to melt it. What is the total energy to take for the ice cube to melt? [Conceptual note: What is the relationship between power and energy?]
5 26. A motorcycle driver goes into a vertical loop as shown with a uniform speed. Find the minimum speed to go through the top of the loop and the normal force at the bottom with that speed. The total mass of the driver and the motorcycle is 197 kg. The radius of the loop is 12.8 m. [Conceptual note: What is the condition the driver feels weightlessness at the top?] Check out the following before taking the exam: Can you solve all the questions from the beginning without any help and hints? Do you understand the concept behind each question? Can you relate each question to the lecture topics? Can you visualize the physical situation of each problem? Answer Keys m/s kg kg N 5. Object hanged : motionalaxis ΣF=mgT=ma Object on the plane: motionalaxis ΣF=Tµ k n=ma; perp. to motionalaxis: ΣF=nMg=0 6. Along the slope: ΣF=mgsinθµ k n=ma perpendicular to the slope: ΣF=nmgcosθ=0 4.0 m/s N/m m/s o m m/s J s W m/s N o J m m/s /9g E or 2.18 m/s N N J m/s; 3860 N
Kinetic Energy and Work
PHYS 101 Previous Exam Problems CHAPTER 7 Kinetic Energy and Work Kinetic energy Work Workenergy theorem Gravitational work Work of spring forces Power 1. A single force acts on a 5.0kg object in such
More informationZero 3.7 m/s 2, downward 7.4 m/s 2, upward 7.4 m/s 2, downward 3.7 m/s 2, upward
PracticeExam2 1. A plastic ball in a liquid is acted upon by its weight and by a buoyant force. The weight of the ball is 2.5 N. The buoyant force has a magnitude of 4.4 N and acts vertically upward. At
More informationChapter 4 Lecture Notes
Chapter 4 Lecture Notes Physics 2414  Strauss Formulas: ΣF = ma F G = mg F SF µ S N F KF = µ K N Main Ideas: 1. Newton s Three laws 2. Weight 3. Solving Problems 4. Friction In this chapter we will study
More informationPSI AP Physics 1 Circular Motion
PSI AP Physics 1 Circular Motion Multiple Choice 1. A ball is fastened to a string and is swung in a vertical circle. When the ball is at the highest point of the circle its velocity and acceleration directions
More informationPhysics 125 Practice Exam #2 Chapters 45 Professor Siegel
Physics 125 Practice Exam #2 Chapters 45 Professor Siegel Name: Lab Day: 1. With one exception, each of the following units can be used to express mass. What is the exception? A) newton B) slug C) gram
More informationAnswer, Key Homework 9 David McIntyre May 10,
Answer, Key Homework 9 David McIntyre 4513 May 10, 004 1 This printout should have 16 questions. Multiplechoice questions may continue on the next column or page find all choices before making your selection.
More informationThe net force on the object always acts along the line of motion of the object.
Physics 125 Practicemakesperfect Quiz Chapter 4&5 These are the types of problems that you will see on the quizzes. Use this practice quiz as a gauge for your understanding of physics. The answers are
More informationChapter 4. Forces and Newton s Laws of Motion. continued
Chapter 4 Forces and Newton s Laws of Motion continued 4.9 Static and Kinetic Frictional Forces When an object is in contact with a surface forces can act on the objects. The component of this force acting
More informationFORCES AND NEWTON S LAWS OF MOTION
chapter FORCES AND NEWTON S LAWS OF MOTION Section 4.1 The Concepts of Force and Mass Section 4.2 Newton s First Law of Motion Section 4.3 Newton s Second Law of Motion 1. With one exception, each of the
More informationPhys101 Lectures 4 & 5 Dynamics: Newton s Laws of Motion
Phys101 Lectures 4 & 5 Dynamics: Newton s Laws of Motion Key points: Newton s second law is a vector equation Action and reaction are acting on different objects FreeBody Diagrams Friction Inclines Ref:
More informationFinal Review (F2007) Chapter 2: Describing Motion: Kinematics in One Dimension
Physics I Mechanics Final Review (F2007) Name: ANSWER KEY Chapter 2: Describing Motion: Kinematics in One Dimension 1. Suppose that a car traveling to the East (+x direction) begins to slow down as it
More information9) If the velocity versus time graph of an object is a horizontal line, the object is A) moving with zero acceleration.
1) Which of the following quantities has units of a velocity? (There could be more than one correct choice.) A) 40 km southwest B) 120 m/s C) 9.8 m/s2 downward D) 186,000 mi E) 9.8 m/s downward 2) Suppose
More informationPhysics 201 Fall 2009 Exam 2 October 27, 2009
Physics 201 Fall 2009 Exam 2 October 27, 2009 Section #: TA: 1. A mass m is traveling at an initial speed v 0 = 25.0 m/s. It is brought to rest in a distance of 62.5 m by a force of 15.0 N. The mass is
More informationDYNAMICS OF UNIFORM CIRCULAR MOTION
chapter DYNAMICS OF UNIFORM CIRCULAR MOTION Section 5.1 Uniform Circular Motion Section 5.2 Centripetal Acceleration 1. A ball moves with a constant speed of 4 m/s around a circle of radius 0.25 m. What
More informationNewton s Laws Name: Per: Teacher: What is a force? Newton s First Law (Law of Inertial) What do forces cause?
Physics B Newton s Laws Name: Per: Teacher: What is a force? Newton s First Law (Law of Inertial) What do forces cause? What is the relationship between mass and inertia? Draw a force diagram on the book.
More informationPhysics 211 Week 5. Work and Kinetic Energy: Block on Ramp
Physics 211 Week 5 Work and Kinetic Energy: Block on Ramp A block starts with a speed of 15 m/s at the bottom of a ramp that is inclined at an angle of 30 o with the horizontal. The coefficient of kinetic
More informationForces. Isaac Newton was the first to discover that the laws that govern motions on the Earth also applied to celestial bodies.
Forces Now we will discuss the part of mechanics known as dynamics. We will introduce Newton s three laws of motion which are at the heart of classical mechanics. We must note that Newton s laws describe
More informationB. the same as that of the lead ball C. less than that of the lead ball D. 9.8 m/s 2 E. zero since it floats in a vacuum
ENGPHY1 QUIZ 2 Force Laws of Motion Circular Motion Other Applications of Newton's Laws MULTIPLE CHOICE 1. Acceleration is always in the direction: A. of the displacement B. of the initial velocity C.
More informationPhysics1 Recitation3
Physics1 Recitation3 The Laws of Motion 1) The displacement of a 2 kg particle is given by x = At 3/2. In here, A is 6.0 m/s 3/2. Find the net force acting on the particle. (Note that the force is time
More informationSolutions to Homework Set #7 Phys2414 Fall 2005
Solution Set #7 Solutions to Homework Set #7 Phys244 Fall 2005 Note: The numbers in the boxes correspond to those that are generated by WebAssign. The numbers on your individual assignment will vary. Any
More informationReview. Prep for Exam 2 Wednesday, 10/23 at 7:15pm. 10/23/2013 Physics 218
Chapters 5, 6, 7, 8 Review Prep for Exam 2 Wednesday, 10/23 at 7:15pm Blocker 102 10/23/2013 Physics 218 1 Learning Goals Chapter 5 How to use Newton s Laws to solve problems involving forces that act
More informationnewton AP practice Multiple Choice Identify the choice that best completes the statement or answers the question.
newton AP practice Multiple Choice Identify the choice that best completes the statement or answers the question. 1. In the figure, if the tension in string 1 is 34 N and the tension in string 2 is 24
More informationAP* Newton s Laws Free Response Questions
1981 Q1 AP* Newton s Laws Free Response Questions A 10kilogram block is pushed along a rough horizontal surface by a constant horizontal force F as shown above. At time t = 0, the velocity v of the block
More informationTennessee State University
Tennessee State University Dept. of Physics & Mathematics PHYS 2110 CF SP 2009 Name 30% Time is 2 hours. Cheating will give you an Fgrade. Other instructions will be given in the Hall. MULTIPLE CHOICE.
More informationPSI AP Physics I Dynamics
PSI AP Physics I Dynamics MultipleChoice questions 1. After firing a cannon ball, the cannon moves in the opposite direction from the ball. This an example of: A. Newton s First Law B. Newton s Second
More informationThe Laws of Motion. ANS: a
The Laws of Motion 1. When an object is observed to be at rest relative to an observer in an inertial reference frame, a. the sum of any forces acting on the object is zero. b. there are no forces acting
More information2) Draw an x y axis and define the direction you are moving in as the + direction. If not moving, + direction is arbitrary
Solving Dynamics Problems 1) Draw Sketch / FBD with all forces shown 2) Draw an x y axis and define the direction you are moving in as the + direction. If not moving, + direction is arbitrary 3) Write
More informationRecap  Forces. Action =  Reaction. Newton s first law:
Newton s first law: Newton s second law: Recap  Forces An object moves with a velocity that is constant in magnitude and direction unless a nonzero net force acts on it. Newton s 3rd law: Action = 
More informationChapter 4 Dynamics: Newton s Laws of Motion. Copyright 2009 Pearson Education, Inc.
Chapter 4 Dynamics: Newton s Laws of Motion Force Units of Chapter 4 Newton s First Law of Motion Mass Newton s Second Law of Motion Newton s Third Law of Motion Weight the Force of Gravity; and the Normal
More informationPHYS101 The Laws of Motion Spring 2014
The Laws of Motion 1. An object of mass m 1 = 55.00 kg placed on a frictionless, horizontal table is connected to a string that passes over a pulley and then is fastened to a hanging object of mass m 2
More informationC B A T 3 T 2 T 1. 1. What is the magnitude of the force T 1? A) 37.5 N B) 75.0 N C) 113 N D) 157 N E) 192 N
Three boxes are connected by massless strings and are resting on a frictionless table. Each box has a mass of 15 kg, and the tension T 1 in the right string is accelerating the boxes to the right at a
More informationSHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Exam Name SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 1) The graph in the figure shows the x component of the acceleration of a 2.4kg object as a
More informationChapter 4. Forces and Newton s Laws of Motion. continued
Chapter 4 Forces and Newton s Laws of Motion continued Exam Arrive ON TIME by 10:20 or you will not take the exam. Only Section 1 students. Sit ONLY in your assigned seat. Latest assignments will be on
More informationAP Physics 1 Fall Semester Review
AP Physics 1 Fall Semester Review One Dimensional Kinematics 1. Be able to interpret motion diagrams. a. Assuming there are equal time intervals between each picture shown above, which car in the diagram
More informationChapter 5 Using Newton s Laws: Friction, Circular Motion, Drag Forces. Copyright 2009 Pearson Education, Inc.
Chapter 5 Using Newton s Laws: Friction, Circular Motion, Drag Forces Units of Chapter 5 Applications of Newton s Laws Involving Friction Uniform Circular Motion Kinematics Dynamics of Uniform Circular
More informationTHE NATURE OF FORCES Forces can be divided into two categories: contact forces and noncontact forces.
SESSION 2: NEWTON S LAWS Key Concepts In this session we Examine different types of forces Review and apply Newton's Laws of motion Use Newton's Law of Universal Gravitation to solve problems Xplanation
More informationTurn in both the exam and the scantron sheets at the end of the exam.
Physics 161 NAME ANSWERS Final Exam Section # Dr. Dennis Drew May 17, 2004 Turn in both the exam and the scantron sheets at the end of the exam. Part I : 3 Partial credit questions each worth 11 pts. Show
More informationF N A) 330 N 0.31 B) 310 N 0.33 C) 250 N 0.27 D) 290 N 0.30 E) 370 N 0.26
Physics 23 Exam 2 Spring 2010 Dr. Alward Page 1 1. A 250N force is directed horizontally as shown to push a 29kg box up an inclined plane at a constant speed. Determine the magnitude of the normal force,
More informationVersion 001 Quest 3 Forces tubman (20131) 1
Version 001 Quest 3 Forces tubman (20131) 1 This printout should have 19 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. l B Conceptual
More information= ma C. = m v2 r ; 3.00 kg. (constant); PE B0 PE A. (m + m 2 A B )v2 = PE B0. = 1 2 m B v2 = KE f
1. A certain string just breaks when it is under 25 N of tension. A boy uses this string to whirl a 0.75kg stone in a horizontal circle of radius 2.0 m. The boy continuously increases the speed of the
More informationCentripetal Acceleration & Centripetal Forces
Centripetal Acceleration & Centripetal Forces This is circular motion. When an object moves in a circular motion at a constant speed, it has uniform circular motion. The magnitude of the velocity remains
More informationPhysics 201 Homework 5
Physics 201 Homework 5 Feb 6, 2013 1. The (nonconservative) force propelling a 1500kilogram car up a mountain 1.21 10 6 joules road does 4.70 10 6 joules of work on the car. The car starts from rest
More informationReview sheet. 1. A car accelerates uniformly from rest to a speed of 10 meters per second in 2 seconds. The acceleration of the car is
Name: ate: 1. car accelerates uniformly from rest to a speed of 10 meters per second in 2 seconds. The acceleration of the car is. 0.2 m/sec 2. 5 m/sec 2 5. The graph shown represents the relationship
More information1) Your mass on the moon will be about onesixth of your mass on Earth.
Exam Name TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) Your mass on the moon will be about onesixth of your mass on Earth. 1) 2) The kinetic coefficient of friction
More informationHOW DO YOU GET SOMETHING TO MOVE IN A CIRCLE?
CIRCULAR MOTION HOW DO YOU GET SOMETHING TO MOVE IN A CIRCLE? Name one thing that travels in a circular path. (not something that spins) What are some things we could measure about its motion? Consider
More informationPhysics 101 Exam 1 NAME 2/7
Physics 101 Exam 1 NAME 2/7 1 In the situation below, a person pulls a string attached to block A, which is in turn attached to another, heavier block B via a second string (a) Which block has the larger
More informationPractice Exam 1 Solutions. Concept Questions: Briefly answer the following questions.
MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics Physics 8.01T Fall Term 2004 Practice Exam 1 Solutions Concept Questions: Briefly answer the following questions. 1. When a car accelerates forward,
More information1 st Semester Review 1980s problems
1 st Semester Review 1980s problems 1980B1. A ball of weight 5 newtons is suspended by two strings as shown above. a. In the space below, draw and clearly label all the forces that act on the ball. b.
More informationPhysics 2101, First Exam, Fall 2007
Physics 2101, First Exam, Fall 2007 September 4, 2007 Please turn OFF your cell phone and MP3 player! Write down your name and section number in the scantron form. Make sure to mark your answers in the
More informationFriction, inclines, and tension
Friction, inclines, and tension Suppose a crate has a mass of 100kg and you push on it with a force of 1000N as it slides. You then measure the resulting acceleration and find it is only 4m/s 2. But you
More informationExam. Name. TRUE/FALSE. Write ʹTʹ if the statement is true and ʹFʹ if the statement is false. 1) Kinetic energy is proportional to speed.
Exam Name TRUE/FALSE. Write ʹTʹ if the statement is true and ʹFʹ if the statement is false. 1) Kinetic energy is proportional to speed. 2) The gravitational force is a conservative force. 3) If work is
More informationSept 24 Hour One: Problem Solving Session 4: Newton's Laws of Motion; Spring Forces, Tension. Reading: YF , 5.5
MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics Physics 8.01T Fall Term 2004 Problem Set 3: Newton's Laws of Motion, Motion: Force, Mass, and Acceleration, Vectors in Physics Available online
More informationMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The following four forces act on a 4.00 kg object: 1) F 1 = 300 N east F 2 = 700 N north
More informationPHY231 Section 2, Form B March 22, 2012
1. A 200kg cannon at rest contains a 10kg cannon ball. When fired, the cannon ball leaves the cannon with a speed of 90 m/s. What is the recoil speed of the cannon? A) 4.5 m/s B) 9 m/s C) 45 m/s D) 90
More informationCollege Physics 140 Chapter 4: Force and Newton s Laws of Motion
College Physics 140 Chapter 4: Force and Newton s Laws of Motion We will be investigating what makes you move (forces) and how that accelerates objects. Chapter 4: Forces and Newton s Laws of Motion Forces
More informationBig Idea 3: Dynamics 1 AP Physics 1
Big Idea 3: Dynamics 1 AP Physics 1 1. A mixed martial artist kicks his opponent in the nose with a force of 200 newtons. Identify the actionreaction force pairs in this interchange. (A) foot applies
More information4. DYNAMICS: NEWTON S LAWS OF MOTION.
4. DYNAMICS: NEWTON S LAWS OF MOTION. Key words: Dynamics, Force, First Newton s Law of Motion, Inertial Reference Frames, Mass, kilogram, Newton s Second Law of Motion, Newton s Third Law of motion, Key
More informationObjects in Equilibrium. Applications of Newton s Law
Units of Force Gravitational Force The gravitational force, F g, is the force that the earth exerts on an object This force is directed toward the center of the earth Its magnitude is called the weight
More informationPH 2211D Spring Force and Motion II. Lecture Chapter 6 (Halliday/Resnick/Walker, Fundamentals of Physics 9 th edition)
PH 2211D Spring 2013 Force and Motion II Lecture 1213 Chapter 6 (Halliday/Resnick/Walker, Fundamentals of Physics 9 th edition) Chapter 6 Force and Motion II In this chapter we will cover the following
More informationPhysics 211 Week 9. Rotational Kinematics and Energy: Bowling Ball
Rotational Kinematics and Energy: Bowling Ball Two identical bowling balls are rolling on a horizontal floor without slipping. The initial speed of both balls is V = 9.9m/s. Ball A encounters a frictionless
More informationGeneral Physics (PHY 2130)
General Physics (PHY 2130) Lecture 9 Solving problems with ewton s laws Gravity Contact forces http://www.physics.wayne.edu/~apetrov/phy2130/ Lightning Review Last lecture: Laws of motion: forces, three
More informationMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Unit 03  Work, Energy, Power Multiple Choice Concept Questions Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Two men, Joel and Jerry, push
More informationA 1,800 B 5,000 C 100,000 D
Slide 1 / 35 1 driver in a 2000 kg Porsche wishes to pass a slow moving school bus on a 4 lane road. What is the average power in watts required to accelerate the sports car from 30 m/s to 60 m/s in 9
More informationDrawing and Using FreeBody Diagrams
Name (First AND Last): Date: Goal: Drawing and Using FreeBody Diagrams Adapted from Minds on Physics Activity #51: Recognizing and Interpreting FreeBody Diagrams After completing this activity, you should
More informationPhys 106 Final Exam Practice Questions Spring 2003 NJIT
Phys 106 Final Exam Practice Questions Spring 2003 NJIT Situation A A 4.0kg body is freely pivoted about a point 0.15 m from the center of mass. The period of smallamplitude oscillations of this physical
More informationChapter 5 Applying Newton s Laws
Chapter 5 Applying Newton s Laws In this chapter we will introduce more applications of Newton s 1 st and 2 nd law. In summary, all of the contact forces and actionatadistance forces will go on the
More informationv v ax v a x a v a v = = = Since F = ma, it follows that a = F/m. The mass of the arrow is unchanged, and ( )
Week 3 homework IMPORTANT NOTE ABOUT WEBASSIGN: In the WebAssign versions of these problems, various details have been changed, so that the answers will come out differently. The method to find the solution
More informationChapter 7: Kinetic Energy and Work
Chapter 7: Kinetic Energy and Work In this chapter, we will study the important concepts of kinetic energy and the closely related concept of work and power. A Kinetic Energy Kinetic energy is a physical
More informationAP Physics Newton's Laws Practice Test
AP Physics Newton's Laws Practice Test Answers: A,D,C,D,C,E,D,B,A,B,C,C,A,A 15. (b) both are 2.8 m/s 2 (c) 22.4 N (d) 1 s, 2.8 m/s 16. (a) 12.5 N, 3.54 m/s 2 (b) 5.3 kg 1. Two blocks are pushed along a
More informationSAMPLE QP FOR XI HALFYEARLY EXAMINATION SUB: PHYSICS CLASS  XI
SAMPLE QP F XI HALFYEARLY EXAMINATION SUB: PHYSICS CLASS  XI TIME: HOURS M.M: 70 Please check that this question paper contains 6 questions. Please write down the serial number of the question before
More informationREC. INSTR.. INSTRUCTIONS: PLEASE READ THE FOLLOWING BEFORE YOU START THE EXAM
PHYSICS 111 PRACTICE MIDTERM NAME REC. INSTR.. INSTRUCTIONS: PLEASE READ THE FOLLOWING BEFORE YOU START THE EXAM 1. Write your name and your recitation instructor's name on each page of the exam.. This
More informationAP Physics 1. Circular Motion. MultipleChoice Questions
MultipleChoice Questions 1. A ball with a mass m is fastened to a string and is swung in a vertical circle. When the ball is at the highest point of the circle the tension in the string is: (A) mg (B)
More information4. Using her measured quantities, what must she graph to linearize the graph so that the slope of the line is the acceleration due to gravity?
Linear Kinematics 1. A student wants to determine the height of an unreachable object. The materials available include a protractor and tape for measuring small distances. Describe a procedure that can
More informationPhysics Samples: Q2 Exam Per Date Name
Physics Samples: Q2 Exam Per Date Name 1. According to your reference table, Approximate Coefficents of Friction, what is the minimum horizontal force needed to start a 300. kilogram steel block on a steel
More informationPHY231 Section 2, Form A March 22, 2012. 1. Which one of the following statements concerning kinetic energy is true?
1. Which one of the following statements concerning kinetic energy is true? A) Kinetic energy can be measured in watts. B) Kinetic energy is always equal to the potential energy. C) Kinetic energy is always
More informationLecture 9. Friction in a viscous medium Drag Force Quantified
Lecture 9 Goals Describe Friction in Air (Ch. 6) Differentiate between Newton s 1 st, 2 nd and 3 rd Laws Use Newton s 3 rd Law in problem solving Assignment: HW4, (Chap. 6 & 7, due 10/5) 1 st Exam Thurs.,
More information1. Unless acted on by an external net force, an object will stay at rest or
1. Unless acted on by an external net force, an object will stay at rest or A. come to rest. B. decelerate at a constant rate. C. slow down from a given speed. D. continue to move in a straight line at
More informationApplying Newton s Laws
Chapter 5 Applying Newton s Laws PowerPoint Lectures for University Physics, Thirteenth Edition Hugh D. Young and Roger A. Freedman Lectures by Wayne Anderson Goals for Chapter 5 To use Newton s first
More informationPHY1 Review for Exam 5
Topics 1. Uniform circular Motion a. Centripetal acceleration b. Centripetal force c. Horizontal motion d. ertical motion e. Circular motion with an angle 2. Universal gravitation a. Gravitational force
More informationLesson 04: Newton s laws of motion
www.scimsacademy.com Lesson 04: Newton s laws of motion If you are not familiar with the basics of calculus and vectors, please read our freely available lessons on these topics, before reading this lesson.
More information5 Displacement and Force in Two Dimensions 3 Forces in Two Dimensions
5 Displacement and Force in Two Dimensions 3 Forces in Two Dimensions 3(F), 4(C), 4(D), 4(E) MAINIDEA Write the Main Idea for this section. REVIEW VOCABULARY equilibrium Recall and write the definition
More informationExam 2 PREP Chapters 4 & 5
PHY241  General Physics I Dr. Carlson, Fall 2013 Prep Exam 2 PREP Chapters 4 & 5 Name TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) If a 5.0 kg box is pulled simultaneously
More informationDefinition of Torque
Chapter 8: Rotational Equilibrium and Dynamics Force vs. Torque Forces cause accelerations Torques cause angular accelerations Definition of Torque Torque,, is the tendency of a force to rotate an object
More information1 of 7 10/2/2009 1:13 PM
1 of 7 10/2/2009 1:13 PM Chapter 6 Homework Due: 9:00am on Monday, September 28, 2009 Note: To understand how points are awarded, read your instructor's Grading Policy. [Return to Standard Assignment View]
More informationB) 40.8 m C) 19.6 m D) None of the other choices is correct. Answer: B
Practice Test 1 1) Abby throws a ball straight up and times it. She sees that the ball goes by the top of a flagpole after 0.60 s and reaches the level of the top of the pole after a total elapsed time
More informationProject 2: Newton s Laws
Project 2: Newton s Laws Student Objectives: Draw free body diagrams by recognizing which forces are present on an object and how these forces act. Develop the intuition to break out of the standard horizontal/vertical
More informationApplications of Newton s Laws
Chapter 5 Applications of Newton s Laws We shall apply Newton s laws of motion to a variety of situations in which several types of forces are involved: Gravitational force Tension Contact Forces (including
More informationPHYSICS 251 MIDTERM EXAM  FALL Student Number
PHYSICS 51 MIDTERM EXAM  FALL 001 Name Student Number CHECK ONE: Smith 9:00 Ingram 10:00 Ingram/Hla :00 Note that problems 110 are worth points each, while problems 1113 are worth 10 points. There is
More informationPhysics 6A MWF Section Winter 2012 Final
Physics 6A MWF Section Winter 2012 Final Enter the answer to the multiple choice questions on the pink scantron sheet. Use a pencil, not a pen. There is no penalty for the wrong answer Write your name
More informationTwo books laid the foundations for our understanding of forces and motion... CHAPTER 4 NEWTON S LAWS. Little bit of history. Forces.
Two books laid the foundations for our understanding of forces and motion... Little bit of history orces Newton s 1st Law CHAPTER 4 NEWTON S LAWS Newton s 2nd Law mass and weight Newton s 3rd Law action
More informationPhysics 2A, Sec B00: Mechanics  Winter 2011 Instructor: B. Grinstein Final Exam
Physics 2A, Sec B00: Mechanics  Winter 2011 Instructor: B. Grinstein Final Exam INSTRUCTIONS: Use a pencil #2 to fill your scantron. Write your code number and bubble it in under "EXAM NUMBER;" an entry
More information1. Newton s Laws of Motion and their Applications Tutorial 1
1. Newton s Laws of Motion and their Applications Tutorial 1 1.1 On a planet far, far away, an astronaut picks up a rock. The rock has a mass of 5.00 kg, and on this particular planet its weight is 40.0
More information1. One mile is equal to 1609 meters; one hour is equal to 3600 seconds, mph is 1 mile per hour. The speed of 17 m/s is equivalent to the speed of:
Sample Final 105_fall 2009 1. One mile is equal to 1609 meters; one hour is equal to 3600 seconds, mph is 1 mile per hour. The speed of 17 m/s is equivalent to the speed of: A) 17 mph B) 38 mph C) 7.6
More informationDynamics Chapter Questions. 3. Discuss how an object s acceleration relates to the direction of its movement.
PSI AP Physics I Dynamics Chapter Questions 1. What is Newton s First Law? 2. Can an object with zero net force acting on it be moving? Explain. 3. Discuss how an object s acceleration relates to the direction
More information1. A 1000kg elevator is rising and its speed is increasing at 3m/s 2. The tension force of the cable on the elevator is:
1. A 1000kg elevator is rising and its speed is increasing at 3m/s 2. The tension force of the cable on the elevator is: A. 6800N B. 1000N C. 3000N D. 9800N E. 12800N ans: E 2. A 25N crate slides down
More informationDo not fill out the information below until instructed to do so! Name: Signature: Student ID: Section Number:
Do not fill out the information below until instructed to do so! Name: Signature: Student ID: Email: Section Number: Formulae are provided on the last page. You may NOT use any other formula sheet. You
More informationCHAPTER 6 WORK AND ENERGY
CHAPTER 6 WORK AND ENERGY CONCEPTUAL QUESTIONS. REASONING AND SOLUTION The work done by F in moving the box through a displacement s is W = ( F cos 0 ) s= Fs. The work done by F is W = ( F cos θ). s From
More informationName: Date: PRACTICE QUESTIONS PHYSICS 201 FALL 2009 EXAM 2
Name: Date: PRACTICE QUESTIONS PHYSICS 201 FALL 2009 EXAM 2 1. A force accelerates a body of mass M. The same force applied to a second body produces three times the acceleration. What is the mass of the
More informationPhysics Final Exam Free Response Section
Physics Final Exam Free Response Section 1. The first 10 meters of a 100meter dash are covered in 2 seconds by a sprinter who starts from rest and accelerates with a constant acceleration. The remaining
More informationChapter 4 Dynamics: Newton s Laws of Motion
Chapter 4 Dynamics: Newton s Laws of Motion Units of Chapter 4 Force Newton s First Law of Motion Mass Newton s Second Law of Motion Newton s Third Law of Motion Weight the Force of Gravity; and the Normal
More information