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Questions  

A merry-go-round, made of a ring-like platform of radius R and mass M, is revolving with angular speed ω. A person of mass M is standing on it. At one instant, the person jumps off the round radially away from the centre of the round as seen from the round. The speed of the round afterwards is :

a
ω
b
c
ω2
d
zero

detailed solution

Correct option is A

As person jumps off radially so torque on round = 0. Therefore, speed of round = constant.

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