Hi, Just a question on gravitational potential,
There is a satellite of mass 750kg, and it stays on the surface of the earth, it is then moved into a geosynchronous orbit, and both gravitational potential energies are told to be calculated,
When you use the equation V=-GM/r Why do you use M as the mass of the earth even when calculating the satellite in a geosynchronous orbit away from the surface of the earth, why don't you use the mass of the satellite?
Thanks!