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A sphere of mass m is given some angular...

A sphere of mass m is given some angular velocity about a horizontal axis through its centre and gently placed on a plank of mass 'm'. The co-efficent of friction between the two is `mu`. The plank rests on a smooth horizontal surface. The initial acceleration of the centre of sphere relative to the plank will be

A

zero

B

`mug`

C

`(7//5)mug`

D

`2mug`

Text Solution

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The correct Answer is:
D
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