Question

what is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass m and r in a circular orbit at an altitude of 2R
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Answer 1

Answer:

It is to be launched from the earth's surface out into free space. The value of 'g'and 'R'(radius of earth) are 10 m/s2 and 6400km respectively. The required energy for this work will be; 6.4 x1011 J.