The satellite is moving round the earth (radius of earth = R) at a distance r from the centre of the earth. If g is the acceleration due to gravity on the surface of the earth. The acceleration of the satellite will be

Options

A. g
B. `sqrt((Rg)/(r))`
C. `(R^(2))/(r^(2))g`
D. `sqrt((gr)/(R))`

Answer

c

Explanation

`g_(h)=g(1-(g)/(R)) and g_(d)=(1-(2d)/(R))`