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A plank P is placed on a solid cylinder ...

A plank `P` is placed on a solid cylinder `S`, which rolls on a horizontal surface. The two are of equal mass. There is no slipping at any of the surfaces in contact. The ratio of kinetic energy of `P` to the kinetic energy of `S` is:

A

`1:1`

B

`12:1`

C

`8:3`

D

`11:8`

Text Solution

Verified by Experts

The correct Answer is:
C
`KE_(P)=(1)/(2)m(2v)^(2)`
`kE_(S)=(3)/(4)mv^(2)`
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