Equilibrium of Rigid Bodies, Rigid Body Rotation and Equations of Rotational Motion NEET Questions

Physics - Rotational Motion

Equilibrium of Rigid Bodies, Rigid Body Rotation and Equations of Rotational Motion MCQ Questions


1.
A rigid body is in mechanical equilibrium when
A.
Net force is zero
B.
Net torque is zero
C.
Both net force and net torque are zero
D.
Either net force or net torque is zero
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ANSWER :
C. Both net force and net torque are zero
2.
The center of mass of a rigid body is the point where
A.
All mass is concentrated
B.
Total weight acts
C.
Moment of inertia is maximum
D.
Torque is maximum
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ANSWER :
B. Total weight acts
3.
In the parallel axis theorem, the term Md2 represents
A.
Mass of the body
B.
Distance between axes
C.
Added moment of inertia
D.
Rotational kinetic energy
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ANSWER :
C. Added moment of inertia
4.
For a rotating rigid body, which quantity is conserved in the absence of external torque?
A.
Angular velocity
B.
Angular acceleration
C.
Angular momentum
D.
Torque
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ANSWER :
C. Angular momentum
5.
A rigid body rotates with constant angular velocity. The net torque acting on it is
A.
Zero
B.
Increasing
C.
Decreasing
D.
Cannot be determined
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ANSWER :
A. Zero
6.
A solid sphere and a hollow sphere of the same mass and radius are released together on an inclined plane. Which reaches the bottom first?
A.
Solid sphere
B.
Hollow sphere
C.
Both together
D.
Cannot be determined
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ANSWER :
A. Solid sphere