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The pulley arrangements of Figs. (a) and...

The pulley arrangements of Figs. (a) and (b) are identical. The mass of the rope is negligible. In (a) the mass m is lifted up by attaching a mass 2m to the other end of the rope. In (b), m is lifted up by pulling the other end of the rope with a constant downward force `F=2mg`. The acceleration of m is the same in both cases

A

`g//3, g//3`

B

`g//3,g`

C

`g//4,g//3`

D

`g//4,g`

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The correct Answer is:
B
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