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A massless rope is wrapped several times...

A massless rope is wrapped several times on a disc of mass M and radius R. The other end is tied to a mass m which at the beginning is at a height of h above ground as shown in the figure. When released the velocity of the mass as it touches the ground is

A

`sqrt(2gh)`

B

`sqrt(2gh)(M)/(m)`

C

`sqrt(2ghm//M)`

D

`sqrt(4gh//2m+M)`

Text Solution

Verified by Experts

The correct Answer is:
D
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