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A body of mass m was slowly pulled up th...

A body of mass m was slowly pulled up the hill by a force F which at each point was directed along the tangent of the trajectory. All surfaces aresmooth. Find the work performed by this force.

A

mgl

B

`-mgl`

C

mgh

D

zero

Text Solution

Verified by Experts

The correct Answer is:
C
(c ) `W_(F)+W_(g)=DeltaK=0, W_(F)=-W_(g)=mgh`
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