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A solid sphere rolls without slipping do...

A solid sphere rolls without slipping down a `30^@` inclined plane. If `g=10ms^-2` then the acceleration of the rolling sphere is

A

`5 ms^-2`

B

`7/25 ms^-2`

C

`25/7 ms^-2`

D

`15/7 ms^-2`

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