1.

A body of mass m kg. starts falling from a point  2R above the Earth?s surface. Its kinetic energy when it has fallen to a point ?R? above the Earth?s surface [R-Radius of Earth, M-Mass of Earth, G-Gravitational Constant]     [MP PMT 2002]

A.             \[\frac{1}{2}\frac{GMm}{R}\]
B.               \[\frac{1}{6}\frac{GMm}{R}\]
C.             \[\frac{2}{3}\frac{GMm}{R}\]
D.               \[\frac{1}{3}\frac{GMm}{R}\]
Answer» C.             \[\frac{2}{3}\frac{GMm}{R}\]


Discussion

No Comment Found

Related MCQs