A skylab of mass 
is first launched from the surface of the earth in a circular orbit of radius 2R (from the centre of the earth) and then it is shifted from this circular orbit to another circular orbit of radius 3R. The minimum energy required to shift the lab from first orbit to the second orbit is
A
B
C
D
MgR
Text Solution
Verified by ExpertsThe correct answer is:
B
Required energy = change in total energy
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