A chain of mass M and length l is held v...

A chain of mass M and length l is held vertically such that its bottom end just touches the surface of a horizontal table. The chain is released from rest. Assume that the portion of chain on the table does not form a heap. The momentum of the portion of the chain above the table after the top end of the chain falls down by a distance `l/8`.

`3/14Msqrt(gl)`

`3/16Msqrt(gl)`

`7/16Msqrt(gl)`

`9/14Msqrt(gl)`

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