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Question

A smooth sphere A is moving on a frictionless horizontal plane with angular speed ω and centre of mass is moving translationally with velocity 'v'. It collides elastically and head-on with an identical sphere B which is at rest. All surfaces are frictionless. After the collision, their angular speeds are ωA and ωB, respectively. Then,


A
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B
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C
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D
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Solution

The correct option is A
ωB=0 rotational KE can’t be transferred from A to B as surfaces are frictionless.

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