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A mass M is lowered with the help of a...

A mass M is lowered with the help of a string by a distance x at a constant acceleration `g/2`. The magnitude of work done by the string will be

A

Mgx

B

`1/2 Mgx^2`

C

`1/2 Mgx`

D

`Mgx^2`

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The correct Answer is:
C
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