Orbital motions occur around an object that generates a centripetal force due to the effect of gravity. Is the net force acting on the satellite zero? Why doesn't it fall?
Orbital Motion II
The satellite orbits the Earth under the influence of gravity. Check the relationship between the radius of gyration and circular velocity.
A satellite in a geostationary orbit rotates synchronously with the Earth. The geostationary orbit is located at about 36,000 km altitude in the plane of the equator. Check what happens as the radius or circular velocity changes.