Question

When a body is orbiting near the surface of the earth, what will be the ratio of its orbital velocity to the escape velocity from earth?

Answer 1

Answer:

To maintain an orbit that is 35,786 kilometers above Earth, the satellite must orbit at a speed of about 11,300 km/hr. The ratio between the orbital velocity and escape velocity in Newtonian Physics is √2. That means Escape velocity is √2 times the orbital speed for a satellite revolving near earth.