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A cord is wound round the circumference ...

A cord is wound round the circumference of wheel of radius `r`. The axis of the wheel is horizontal and fixed and moment of inertia about it is `I`. A weight `mg` is attached to the end of the cord and falls from rest. After falling through a distance `h`, the angular velocity of the wheel will be.

A

`sqrt((2gh)/(I+mr))`

B

`[(2mgh)/(I+mr^(2))] ^(1/2)`

C

` [(2mgh)/(I+2m)] ^(1/2)`

D

`sqrt(2gh)`

Text Solution

Verified by Experts

The correct Answer is:
B
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