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A smooth sphere A is moving on a frictio...

A smooth sphere A is moving on a frictionless horizontal plane with angular speed `omega` and centre of mass velocity `upsilon`. It collides elastically and head on with an identical sphere B at rest. Neglect friction everywhere. After the collision, their angular speeds are `omega_A and omega_B` respectively. Then

A

`omega_(A)ltomega_(B)`

B

`omega_(A)=omega_(B)`

C

`omega_(A)=omega`

D

`omega_(B)=omega`

Text Solution

Verified by Experts

The correct Answer is:
C
There is no torque about C.O.M on sphere A
so `omega_(A)=omega`
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