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A solid sphere and a spherical shell rol...

A solid sphere and a spherical shell roll down an incline from rest from same height. The ratio of times taken by them is

A

`sqrt((21)/(25))`

B

`21/25`

C

`sqrt((25)/(21))`

D

`25/21`

Text Solution

Verified by Experts

The correct Answer is:
A
`t prop sqrt(1+(K^(2))/(r^(2)))`
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