The velocity of a satellite in circular orbit around the Earth depends upon the radius of the orbit and the acceleration of gravity at the orbit.
Above the earth's surface at a height of
h =m = x 106 m,
which corresponds to a radius
r = x earth radius,
the acceleration of gravity is
g = m/s2 = x g on the earth's surface.
At the specified orbit radius, the required orbit velocity is
v =m/s=km/h=mi/h.
The period of the orbit is minutes = hours.
Copyright © 2005 - S. B. EglI
