A uniform flexible chain of 
and 
hangs in equilibrium over a smooth horizontal pin of negligible diameter. One end of the chain is given a small vertical displacement so that the chain slips over the pin. The speed of chain when it leaves pin is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Decrease in gravitational Potential Energy 
Increase in Kinetic Energy
Initially center of mass of chain was descended ll2 below the pin and in final position. It is at distance 1 below the pin. Center of mass has descended l/ 2
mg 
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