define orbital velocity? And derive the equation
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∴ r = R + h. To revolve the satellite, centripetal force of is required (where is orbital velocity) which is provided by gravitational force. between the earth and the satellite.
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Expression for orbital velocity: Suppose a satellite of mass m is revolving around the earth in a circular orbit of radius r, at a height h from the surface of the earth. Let M be the mass of the earth and R be radius of the earth. ∴ r = R + h.
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