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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 horizontal force is applied on it which is initially is zero and gradually increases until the string makes ann angle `theta` with the vertical. Workdone by the force `F` is

A

`mgl(1-sin theta)`

B

`mgl`

C

`mg(1-cos theta)`

D

`mgl(1+cos theta)`

Text Solution

Verified by Experts

The correct Answer is:
C
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