Torque NEET Questions

Physics - Rotational Motion

Torque MCQ Questions


1.
A force F is applied at the edge of a rotating disc of radius R. What is the torque about the center?
A.
FR
B.
2FR
C.
FR/2
D.
F/R
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ANSWER :
A. FR
2.
A uniform rod of length L and mass M is pivoted at one end and held horizontally. What is the initial angular acceleration when released?
A.
3g/2L
B.
g/L
C.
2g/3L
D.
g/2L
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ANSWER :
A. 3g/2L
3.
A force of 10 N is applied at a perpendicular distance of 2 m from a pivot. What is the torque?
A.
5 N路m
B.
10 N路m
C.
20 N路m
D.
15 N路m
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ANSWER :
C. 20 N路m
4.
A seesaw is balanced with a child of mass m sitting at distance d from the pivot. If the child moves closer, what happens to the torque?
A.
Increases
B.
Decreases
C.
Remains same
D.
Becomes zero
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ANSWER :
B. Decreases
5.
The moment of force is also known as:
A.
Angular velocity
B.
Angular displacement
C.
Torque
D.
Inertia
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ANSWER :
C. Torque
6.
A uniform disc and a ring of equal mass and radius rotate with the same angular velocity. Which has a greater torque requirement to stop?
A.
Disc
B.
Ring
C.
Both same
D.
Cannot be determined
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ANSWER :
B. Ring