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The angular momentum of a moving body r...

The angular momentum of a moving body remains constant if

A

net external force is applied

B

net external torque is applied

C

net pressure is applied

D

net external torque is not applied .

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The correct Answer is:
D
When the next external torque acting on a system is zero , the total angular momentum of the system remains constant. Therefore the angular momentum of a moving body remains constant if net external torque is not applied.
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