Question

In order to shift a body of mass m from a circular
orbit of radius 3R to a higher radius 5R around the
earth, the work done is :-
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Answer 1

Answer:

Work done is shifting a body from an orbit of radius 3R to 5R is equal to change in potential energy of the body.

Potential energy =r−GMm

where M is mass of the earth m is mass of satellite r is radius of orbit

W= Final potential energy − Initial potential energy 

W=5R−GMm−(3R−GMm)

     =RGMm(31−51)=15R2GMm

Answer ByToppr