question_answer

An earth satellite of mass m revolves in a circular orbit at a height h from the surface of the earth. R is the radius of the earth and g is acceleration due to gravity at the surface of the earth. The velocity of the satellite in the orbit is given by [NCERT 1983; AIEEE 2004]

A)             \[\frac{g{{R}^{2}}}{R+h}\]          

B)             Gr

C)             \[\frac{gR}{R+h}\]    

D)             \[\sqrt{\frac{g{{R}^{2}}}{R+h}}\]