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Grade: 9
        an object of mass m is pulled uupwards to a height h , whats the work done???
8 years ago

Answers : (2)

vikas askiitian expert
509 Points
							

workdone = F.d = Fdcos@

 

here in this case @ = 0 , d = h , F = mg (weight of body )

 

so , work = (mg)(H) = mgH

8 years ago
Vikas TU
9108 Points
							

 

work done = Force * displacement 

here force acting on this object of mass m is gravitational force that is mg and the  displacement taken is h

Hence work done = mg * h

                          = mgh

 

 

8 years ago
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