What is the minimum coefficient of frict...

What is the minimum coefficient of friction for a solid sphere to roll without slipping on an inclined plane of inclination `theta` ?

A

`(2)/(7)tantheta`

B

`(1)/(3)tantheta`

C

`(1)/(2)tantheta`

D

`(2)/(5)tantheta`

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The correct Answer is:

A

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