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A solid sphere rolls down on an inclined...

A solid sphere rolls down on an inclined plane of `30^(@)` inclination. Ratio of acceleration when it rolls and slides is :

A

`5:7`

B

`7:5`

C

`2:5`

D

`3:5`

Text Solution

Verified by Experts

The correct Answer is:
A
Here `a_(r)=(5)/(7)gsinthetaanda_(s)=gsintheta`
`a_(r):a_(s)::5:7`
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