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Question

In the given figure, the sphere rolls without slipping on the plank which is moving with constant velocity v0. The radius and angular velocity of the sphere is r and ω respectively. The velocity of centre of mass of the sphere is :

A
v0 + r ω
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B
v0 - r ω
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C
r ω
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D
v0
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Solution

The correct option is A v0 + r ω
For pure rolling,
v0=vcmrωvcm=v0+rω

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