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A bob of mass m attached to an inextensi...

A bob of mass m attached to an inextensible string of length I is suspended from a vertical support. The bob rotates in a horizontal circle with an angular speed `omega` red/s about the vertical. About the point of suspension:

A

angular momentum changes in direction but not in magnitude.

B

angular momentum changes both in direction and magnitude.

C

angular momentum is conserved.

D

angular momentum changes in magnitude but not in direction

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