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A block of mass m is attached to one end...

A block of mass m is attached to one end of a light string which is wrapped on a disc of mass 2m and radius R. The total length of the slack portion of the string is `l`. The block is released from rest. The angular velocity of the disc just after the string becomes taut is

A

`sqrt((gl)/(R^(3)))`

B

`sqrt((gl)/(2R^(2)))`

C

`sqrt((2gl)/(3R^(2)))`

D

`sqrt((3gl)/(2R^(2)))`

Text Solution

Verified by Experts

The correct Answer is:
B
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