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.

Options

A. `[mgh]^(1/2)`
B. `[(2mgh)/(I+2mr^(2))]^(1/2)`
C. `[(2mgh)/(I+mr^(2))]^(1/2)`
D. `[(mgh)/(I+mr^(2))]^(1/2)`

Answer

C