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Q.

A person is standing on a platform rotating with an angular speed ω,with stretched hands carrying equal masses each of m. Now he releases the masses such that they fall on the platform. The new angular velocity of platform would be

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a

2ω/3

b

2ω

c

ω

d

ω/2

answer is A.

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Detailed Solution

There will be no change in the angular speed of the platform though masses are released on to the platform

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A person is standing on a platform rotating with an angular speed ω,with stretched hands carrying equal masses each of m. Now he releases the masses such that they fall on the platform. The new angular velocity of platform would be