Parallelogram of Forces NDA Questions

NDA Physics

Parallelogram of Forces MCQ Questions


1.
Which of the following quantities remains constant when a rigid body rotates about a fixed axis?
A.
Linear momentum
B.
Angular momentum
C.
Kinetic energy
D.
Potential energy
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ANSWER :
B. Angular momentum
2.
The angular displacement of a rotating object is measured in
A.
radians
B.
degrees
C.
meters
D.
joules
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ANSWER :
A. radians
3.

According to Newton's second law for rotational motion, the torque acting on an object is equal to the rate of change of its

A.

linear momentum

B.

angular momentum

C.

velocity

D.

mass

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ANSWER :

B. angular momentum

4.
The moment of inertia of a body depends on its:
A.
shape and mass distribution
B.
volume
C.
weight
D.
mass
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ANSWER :
A. shape and mass distribution
5.
If the net external torque acting on a system of particles is zero, then which of the following quantities remains constant?
A.
Angular velocity
B.
Angular acceleration
C.
Torque
D.
Moment of inertia
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ANSWER :
A. Angular velocity
6.
Which of the following statements is true regarding the conservation of angular momentum?
A.
Angular momentum is conserved only if no external torque acts on the system
B.
Angular momentum is always conserved, regardless of external torques
C.
Angular momentum is conserved only in linear motion
D.
Angular momentum is conserved only in rotational motion
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ANSWER :
A. Angular momentum is conserved only if no external torque acts on the system