Explain what is meant by the gravitational potential at a point in a gravitational field
Work done against the field per unit mass when moved from infinity to the point
Newton law of gravitation
Force of attraction between two point masses proportional to product of masses, inversely proportional to square of distance between them
Orbits westward over Equator
Maintains a fixed position relative to surface of Earth
Period is 24 hours
Offers uninterrupted communication between transmitter n receiver
