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A sphere is rolling down an inclined pla...

A sphere is rolling down an inclined plane without slipping. The ratio of rotational kinetic energy to total kinetic energy is

A

`5/7`

B

`2/54`

C

`2/7`

D

none of the above

Text Solution

Verified by Experts

The correct Answer is:
C
`(KE_(rot))/(KE_(rot))=(1/2Iomega^(2))/(1/2mv^(2)+1/2Iomega^(2))=(2/5mv^(2))/(7/5mv^(2))=2/7`
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