Problem 1. Answer each of following five multiple choice or short answer questions. Each questions will be scored out of 4 points. Be sure to show your work and explain your thought process; partial credit will be awarded for correct work even if your final answer is wrong. Part (a) Give an example in which a small force exerts a large torque. Give another example in which a large force exerts a small torque. Part (b) A solid sphere of mass M and radius R is rolling without slipping up a ramp. Which of the following statements are true? There may be more than one correct answer; circle all true statements. (a) The sphere's angular velocity vector points in the same direction as its angular acceleration vector. (b) There exists a force of static friction that points in the same direction as the sphere's linear velocity vector. (c) The sphere's net force points up the ramp. (d) The free body diagram for the sphere is the same as that for a sphere rolling without slipping down a ramp. Part (c) When doing a flip, divers tuck their body inwards by grabbing their knees while rotating. Provide a conceptual argument as to why this would be beneficial. Part (d) Pete and Bill are working on physics homework together. While trying to solve a problem about a horizontal mass-spring system experiencing simple harmonic motion, Bill says the following: "Since the only force affecting the motion of the mass is a spring force, the mass is experiencing constant acceleration, and we can use the kinematic equations." Should Pete agree or disagree with Bill? Defend your reasoning. Part (e) A spring with restoring constant k is compressed by Ax. If you wanted to store more mechanical energy in the spring, would you compress it more or less than Ax? Defend your reasoning.
Problem 1. Answer each of following five multiple choice or short answer questions. Each questions will be scored out of 4 points. Be sure to show your work and explain your thought process; partial credit will be awarded for correct work even if your final answer is wrong. Part (a) Give an example in which a small force exerts a large torque. Give another example in which a large force exerts a small torque. Part (b) A solid sphere of mass M and radius R is rolling without slipping up a ramp. Which of the following statements are true? There may be more than one correct answer; circle all true statements. (a) The sphere's angular velocity vector points in the same direction as its angular acceleration vector. (b) There exists a force of static friction that points in the same direction as the sphere's linear velocity vector. (c) The sphere's net force points up the ramp. (d) The free body diagram for the sphere is the same as that for a sphere rolling without slipping down a ramp. Part (c) When doing a flip, divers tuck their body inwards by grabbing their knees while rotating. Provide a conceptual argument as to why this would be beneficial. Part (d) Pete and Bill are working on physics homework together. While trying to solve a problem about a horizontal mass-spring system experiencing simple harmonic motion, Bill says the following: "Since the only force affecting the motion of the mass is a spring force, the mass is experiencing constant acceleration, and we can use the kinematic equations." Should Pete agree or disagree with Bill? Defend your reasoning. Part (e) A spring with restoring constant k is compressed by Ax. If you wanted to store more mechanical energy in the spring, would you compress it more or less than Ax? Defend your reasoning.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:Problem 1.
Answer each of following five multiple choice or short answer questions.
Each questions will be scored out of 4 points. Be sure to show your work and explain your thought
process; partial credit will be awarded for correct work even if your final answer is wrong.
Part (a) Give an example in which a small force exerts a large torque. Give another
example in which a large force exerts a small torque.
Part (b) A solid sphere of mass M and radius R is rolling without slipping up a ramp.
Which of the following statements are true? There may be more than one correct answer;
circle all true statements.
(a) The sphere's angular velocity vector points in the same direction as its angular
acceleration vector.
(b) There exists a force of static friction that points in the same direction as the sphere's
linear velocity vector.
(c) The sphere's net force points up the ramp.
(d) The free body diagram for the sphere is the same as that for a sphere rolling without
slipping down a ramp.
Part (c) When doing a flip, divers tuck their body inwards by grabbing their knees while
rotating. Provide a conceptual argument as to why this would be beneficial.
Part (d) Pete and Bill are working on physics homework together. While trying to solve
a problem about a horizontal mass-spring system experiencing simple harmonic motion,
Bill says the following:
"Since the only force affecting the motion of the mass is a spring force, the mass is
experiencing constant acceleration, and we can use the kinematic equations."
Should Pete agree or disagree with Bill? Defend your reasoning.
Part (e) A spring with restoring constant k is compressed by Ax. If you wanted to
store more mechanical energy in the spring, would you compress it more or less than
Ax? Defend your reasoning.
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