In figure a force of magnitude F acts on...

In figure a force of magnitude `F` acts on the free end of the card. If the weight is move up alowly by a distance b. How much work is done on the weight by the rope connecting pulley and weight?

`Fh`

`2 Fh`

`Fh//2`

None of these

Text Solution

Verified by Experts

The correct Answer is:

We applying force `F` therefore tension in string is `T = F`. Hence force acting om weight is `2F` upward, and displacement is `h` upward
Hence `W = 2fh` (work done on weight)

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