question_answer

Potential energy of a satellite having mass m and rotating at a height of \[6.4\times {{10}^{6}}\,m\]from the earth surface is

A) \[-0.5\,mg{{R}_{e}}\]                

B) \[-mg{{R}_{e}}\]

C)  \[-2\,mg{{R}_{e}}\]                 

D) \[4\,mg\,{{R}_{e}}\]