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A chain is held on a frictionless table ...

A chain is held on a frictionless table with L/4 hanging over. Knowing total mass of the chain is M and total length L, the minimum work required to pull hanging part back to the table is :

A

`(1)/(4)mgl`

B

`(1)/(8) mgl`

C

`(1)/(16) mgl`

D

`(1)/(32) mgl`

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The correct Answer is:
D
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D MUKHERJEE-KINEMATICS, FORCES-Revision Exercise
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