If a satellite is revolving around a planet of mass Min an elliptical orbit of semi-major axis a. Show that the orbital speed of the satellite when it is at a distance are from the planet will be given by `v^(2)=GM[2/r-1/a]`

If a satellite is revolving around a plenet of mass M in an elliptical orbit of semi-major axis a . Show that the orbital speed of the satellite when it is a distance r from the focus will be given by upsilon^(2) = GM[(2)/(r ) - (1)/(a)]

If a satellite is revolving around a plenet of mass M in an elliptical orbit of semi-major axis a . Show that the orbital speed of the satellite when it is a distance r from the focus will be given by upsilon^(2) = GM[(2)/(r ) - (1)/(a)]

A planet of mass m is moving around the sun in an elliptical orbit of semi-major axis a :