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A ring of radius R is first rotated with...

A ring of radius `R` is first rotated with an angular velocity `omega` and then carefully placed on a rough horizontal surface. The coefficient of friction between the surface and the ring is `mu`. Time after which its angular speed is reduced to half is

A

`(omega_(0)muR)/(2g)`

B

`(omega_(0)g)/(2muR)`

C

`(2omega_(0)R)/(mug)`

D

`(omega_(0)R)/(2mug)`

Text Solution

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The correct Answer is:
D
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