Energy required to move a body of mass m from an orbit of radius 2R to 3R is :
Answer & explanation
Correct answer: option 2
Work done = Change in potential energy
= \(U_2 - U_1\)
=\( [\frac{-GMm}{r_2}] - [-\frac{GMm}{r_1}] \)
=\(-\frac{GMm}{3R} + \frac{GMm}{2R}\)
=\(\frac{GMm}{6R}\)