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Angular momentum of the particle rotatin...

Angular momentum of the particle rotating with a central force is constant due to

A

zero torque

B

constant force

C

constant force

D

constant linear momentum

Text Solution

Verified by Experts

The correct Answer is:
A
Central force on a particle passes through the axis of rotation. Hence the torque of the central force is zero and the angular momentum remains constant.
`tau=(dL)/(dt),` but L is constant
`therefore (dL)/(dt)=0" "therefore" "tau=0`
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