Gravitational field strength is the force unit mass in a gravitational field. Gravitational potential is the work done per unit mass to move an object from infinity to that point. Please note that calculus derivations are only provided for interest.
Newton's Law of Gravitation states that the force is poportional to the product of the masses and inversely porportional to the square of the distance. Please note that calculus derivations are only included for further interest and are not tested in various physics exam boards.
The total energy for an orbiting circular satellite is constant. A synchronous orbit is when an orbiting object has an orbital period equal to the rotational period of the object it is orbiting. Geostationary orbits are in the same plane of the equator and have a orbital time period of 24 hours.