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One end a light spring of natural length...

One end a light spring of natural length d and spring constant `k ( = mg //d) ` is fixed on a rigid support and the other end is fixed to a smoth ring of mass m which can slide without friction on a vertical rod fixed at a distance d from the support. Initially , the spring makes an angle of `37^(@)` with the horizontal as shown in the figure. The system is released from rest. The speed of the ring at the same angle subtended downward will be

A

`sqrt( 2gd)`

B

`sqrt( 3gd)`

C

`sqrt( 4gd)`

D

`sqrt( gd//2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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