Torque-Angular-Momentum Test UPDATED
ACTUAL Exam Questions and CORRECT
Answers
A wheel rolls without slipping along a horizontal road as shown. The velocity of the center of the
wheel is represented by →. Point P is painted on the rim of the wheel. The instantaneous velocity
of point P is:
A. →
B. ←
C. ↑
D. «
E. zero - CORRECT ANSWER - E. zero
A wheel of radius 0.5 m rolls without sliding on a horizontal surface as shown. Starting from
rest, the wheel moves with constant angular acceleration 6 rad/s2. The distance in traveled by the
center of the wheel from t = 0 to t = 3 s is:
A. zero
B. 27 m
C. 13.5 m
D. 18 m
E. none of these - CORRECT ANSWER - C. 13.5 m
Two wheels roll side-by-side without sliding, at the same speed. The radius of wheel 2 is twice
the radius of wheel 1. The angular velocity of wheel 2 is:
A. the same as the angular velocity of wheel 1
B. more than twice the angular velocity of wheel 1
, C. twice the angular velocity of wheel 1
D. half the angular velocity of wheel 1
E. less than half the angular velocity of wheel 1 - CORRECT ANSWER - D. half the
angular velocity of wheel 1
A thin-walled hollow tube rolls without sliding along the floor. The ratio of its translational
kinetic energy to its rotational kinetic energy (about an axis through its center of mass) is:
A. 1
B. 2
C. 3
D. 1/2
E. 1/3 - CORRECT ANSWER - A. 1
A hoop, a uniform disk, and a uniform sphere, all with the same mass and outer radius, start with
the same speed and roll without sliding up identical inclines. Rank the objects according to how
high they go, least to greatest.
A. hoop, sphere, disk
B. disk, hoop, sphere
C. hoop, disk, sphere
D. sphere, disk, hoop'
E. sphere, hoop, disk - CORRECT ANSWER - C. hoop, disk, sphere
A hoop rolls with constant velocity and without sliding along level ground. Its ratation kinetic
energy is:
A. half its translational kinetic energy
B. the same as its translational kinetic energy
C. twice its translational kinetic energy
ACTUAL Exam Questions and CORRECT
Answers
A wheel rolls without slipping along a horizontal road as shown. The velocity of the center of the
wheel is represented by →. Point P is painted on the rim of the wheel. The instantaneous velocity
of point P is:
A. →
B. ←
C. ↑
D. «
E. zero - CORRECT ANSWER - E. zero
A wheel of radius 0.5 m rolls without sliding on a horizontal surface as shown. Starting from
rest, the wheel moves with constant angular acceleration 6 rad/s2. The distance in traveled by the
center of the wheel from t = 0 to t = 3 s is:
A. zero
B. 27 m
C. 13.5 m
D. 18 m
E. none of these - CORRECT ANSWER - C. 13.5 m
Two wheels roll side-by-side without sliding, at the same speed. The radius of wheel 2 is twice
the radius of wheel 1. The angular velocity of wheel 2 is:
A. the same as the angular velocity of wheel 1
B. more than twice the angular velocity of wheel 1
, C. twice the angular velocity of wheel 1
D. half the angular velocity of wheel 1
E. less than half the angular velocity of wheel 1 - CORRECT ANSWER - D. half the
angular velocity of wheel 1
A thin-walled hollow tube rolls without sliding along the floor. The ratio of its translational
kinetic energy to its rotational kinetic energy (about an axis through its center of mass) is:
A. 1
B. 2
C. 3
D. 1/2
E. 1/3 - CORRECT ANSWER - A. 1
A hoop, a uniform disk, and a uniform sphere, all with the same mass and outer radius, start with
the same speed and roll without sliding up identical inclines. Rank the objects according to how
high they go, least to greatest.
A. hoop, sphere, disk
B. disk, hoop, sphere
C. hoop, disk, sphere
D. sphere, disk, hoop'
E. sphere, hoop, disk - CORRECT ANSWER - C. hoop, disk, sphere
A hoop rolls with constant velocity and without sliding along level ground. Its ratation kinetic
energy is:
A. half its translational kinetic energy
B. the same as its translational kinetic energy
C. twice its translational kinetic energy
