Ap Physics Worksheet With Answers Page 6
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8Chapter 8 – Rotational Motion
37. A point object moves from point A to point B along a circular path with a
radius R. What is the size of the angle θ?
A. 1 rad B. 2 rad
A
B
C
D
C. 3 rad D. 4 rad
38. A solid disk with a radius R rotates at a constant rate ω. Which of the following
points has the greatest angular displacement?
A. A B. B
A
B
C
D
C. C D. All points have the same angular displacement
39. A solid disk with a radius R rotates at a constant rate ω. Which of the following
points has the greatest linear velocity?
A. A B. B
A
B
C
D
C. C
D. All points have the same linear velocity
40. A solid disk with a radius R rotates at a constant rate ω. Which of the following represents the
period of rotations?
A. 2πω B. ��2�� C. 2��/�� D. 2ω
A
B
C
D
41. An object starts from rest and accelerates at a constant rate α in a circular path with a radius R.
The radius describes an angle θ after time t. Which of the following represents the angular velocity as
a function of θ?
A
B
C
D
A. 2���� B. 2��/�� C. √(2����) D. √(2��/��)
42. An object starts from rest and accelerates at a constant rate in a circular path. After a certain time
t, the object reaches the angular velocity ω. How many revolutions did it make during time t?
A
B
C
D
A. 4���� B. 4��/���� C. ����/4�� D. 4����
43. Torque is the rotational analog of which of the following quantities?
A. kinetic energy B. linear momentum
A
B
C
D
C. acceleration
D. force
44. Two wheels are fixed to each other and are free to rotate about a
frictionless axis through their concentric centers. Four forces are
exerted tangentially to the wheels. The magnitude of the net torque is:
A
B
C
D
A. zero B. FR
C. 2 FR
D. 4 FR
45. In which of the following diagrams is the torque about point O equal in
magnitude to the torque about point X in the diagram to the right?
A
B
C
D
46. Which of the following must be true for the below system of two concentric
massless pulleys and two masses to be at equilibrium?
A. m
= m
1
2
B. m
R
= m
R
1
1
2
2
A
B
C
D
2
C. m
R
= m
R
1
2
2
1
2
2
D. m
R
= m
R
1
1
2
2
47. In translational motion, mass is a measure of an object’s acceleration in response to a force.
What is the rotational analog of mass?
A. torque
A
B
C
D
B. moment of inertia
C. angular acceleration
D. angular momentum
48. When a solid object rotates with a constant angular acceleration, which of the following is true?
A. All points on the object rotate with the same centripetal acceleration.
B. The net torque applied to the object must be zero.
C. The net torque applied to the object must be a constant.
A
B
C
D
D. All points on the object rotate with the same tangential acceleration.
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