Question

If a satellite is revolving around a planet of mass M in an elliptical orbit of semi-major axis a. Show that the orbital speed of the satellite when it is at a distance r from the focus will be given by

Answer 1

Total mechanical energy of a satellite in an elliptical orbit of semi major axis 'a' is 

Comments

Resp. Sir
Can you plz provide a diagram and  also can u tell why the potential energy Kas beeen take - GMm/2a <I know the formula but if we used a there then in PE also shouldn't we use a>