Stability and Equilibrium of Bodies NDA Questions

NDA Physics

Stability and Equilibrium of Bodies MCQ Questions


13.
The torque produced by a force about a point is maximum when the angle between the force and the line joining the point to the force is:
A.
0 Degrees
B.
45 degrees
C.
90 degrees
D.
180 degrees
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ANSWER :
C. 90 degrees
14.
The point of suspension of a pendulum is an example of:
A.
Stable equilibrium
B.
Unstable equilibrium
C.
Neutral equilibrium
D.
None of the above
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ANSWER :
C. Neutral equilibrium
15.
The center of gravity of a body:
A.
Always coincides with its geometrical center
B.
Lies above the surface of the body
C.
Lies below the surface of the body
D.
Depends on the material of the body
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ANSWER :
A. Always coincides with its geometrical center
16.
A body in stable equilibrium tends to:
A.
Remain in its initial position
B.
Return to its initial position when slightly disturbed
C.
Move away from its initial position when slightly disturbed
D.
Stop moving completely
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ANSWER :
B. Return to its initial position when slightly disturbed
17.
The condition for rotational equilibrium of a body is
A.
Net torque acting on the body must be zero
B.
Net force acting on the body must be zero
C.
The body should not rotate
D.
The body should be at rest
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ANSWER :
A. Net torque acting on the body must be zero
18.
The equilibrium is said to be unstable if:
A.
Any disturbance shifts the body to a higher position of potential energy
B.
Any disturbance shifts the body to a lower position of potential energy
C.
Any disturbance does not change the equilibrium condition
D.
None of the above
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ANSWER :
A. Any disturbance shifts the body to a higher position of potential energy