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Question

Find work done by gravity in moving the block from B to A

302558

A

$- m g h$

B

$m g h$

C

$0$

D

$\frac{m g h}{2}$

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Solution

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Correct option is B)

Here work is done along the gravity so the energy here is positive.
The potential energy can be written as $(W_{g})_{B t o A} = m g h$

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