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A string is wrapped around a wheel of ra...

A string is wrapped around a wheel of radius 'r'. The axis of the wheel is horizontal and its M.I. about the axis is I. Weight 'mg' is ties to free end of the string which is released to fall down from rest position. The angular velocity of the wheel after it has fallen through distance 'h' will be

A

`((2gh)/(I+mr^(2)))^(1/2)`

B

`((2mgh)/(1+mr^(2)))^(1/2)`

C

`(2mgh)/(I+2mr^(2))`

D

`sqrt(2gh)`

Text Solution

Verified by Experts

The correct Answer is:
B
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