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Standard XII

Physics

Rotation + Translation

A smooth sphe...

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 $ω_{A}$ and $ω_{B}$ , respectively. Then,

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Solution

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

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

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