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An object of mass m is tied to a string ...

An object of mass `m` is tied to a string of length `l` and a variable force F is applied on it which brings the string gradually at angle thit `theta` with the vertical. Find the work done by the force `F`
.

A

`mgL(1-costheta)`

B

`FL sintheta`

C

mgL

D

`FL(1+tantheta)`

Text Solution

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The correct Answer is:
A
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