question_answer

A satellite of mass m is placed at a distance r from the centre of earth (mass M). The mechanical energy of the satellite is [J&K CET 2005]

A)             \[-\frac{GMm}{r}\]

B)               \[\frac{GMm}{r}\]

C)             \[\frac{GMm}{2r}\]   

D)             \[-\frac{GMm}{2r}\]