Question

Two identical satellites are orbiting in circular orbits around the earth at heights R and 3R respectively from the surface of the earth. The radius of the earth is R.

1. Define orbital velocity.

2. What is its value on the surface of the earth?

3. How do you compare the periods of revolution of these two satellites?

Answer 1

1. The minimum velocity required for a satellite to revolve around earth in a stable orbit is called orbital velocity.

2.

3.