Energy of a Satellite in Circular Orbit
A satellite of mass m is in a circular orbit of radius r around a planet of mass M. The gravitational potential energy of the satellite-planet system is given by U(r) = -GMm/r. What is the total mechanical energy of the system?
A
GMm/2r
B
-GMm/r
C
-GMm/2r
D
GMm/r
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