The angular velocity of the satellite is same in magnitude and direction as that of angular velocity of the earth about its own axis.
These satellites are used in communication purpose. INSAT 2B and INSAT 2C are geostationary satellites of India.
2. Polar Satellites
These are those satellites which revolve in polar orbits around earth. A polar orbit is that orbit whose angle of inclination with equatorial plane of earth is 90 °.
Height from earth’ s surface = 880 km
Time period = 84 min Orbital velocity = 8 km / s
Angular velocity = 2π / 84 = π / 42 rad / min.
There satellites revolve around the earth in polar orbits.
These satellites are used in forecasting weather, studying the upper region of the atmosphere, in mapping, etc.