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A spherical shell of radius R is rolling...

A spherical shell of radius R is rolling down an incline of inclination `theta` without slipping. Find minimum value of coefficient of friction.

A

`2/7 tan theta`

B

`2/5 tan theta`

C

`2/3 tan theta`

D

None

Text Solution

Verified by Experts

The correct Answer is:
B
`F_(f)r=Ialphaimpliesmu mg cos theta=2/3 Ma=2/3M (g sin theta)/(1+2/3)`
`impliesmu=2/5 tan theta`
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