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A body of mass m and radius r is release...

A body of mass `m` and radius `r` is released from rest along a smooth inclined plane of angle of inclination `theta`. The angular momentum of the body about the instantanoues point contact after a time `t` from the instant of release of equal is :

A

mgrt `cos theta`

B

mgrt `sin theta`

C

(3/2) mgrt `sin theta`

D

None of these

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The correct Answer is:
B
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