OnlineCBT
Physics · GRAVITATION
हिन्दीWhat is the work required to be done by an external agent to slowly move a body of mass \( m \) from the surface of Earth (radius \( R_E \), mass \( M_E \)) to a height \( h = R_E \) above the surface?
Correct answer · Option 1
\( \frac{G M_E m}{2 R_E} \)
Explanation
Work done is \( W = -G M_E m (\frac{1}{r_2} - \frac{1}{r_1}) = -G M_E m (\frac{1}{2R_E} - \frac{1}{R_E}) = \frac{G M_E m}{2 R_E} \).
