Ex. 9: Calculate the work required to be done in moving a body of mass 100 kg from a height (2 R) to height (3 R) above the surface of the earth. (G = 6.67 x 10-11 Nm2 / kg?, mass of earth %3D (m) 6 x 1024 kg, radius of earth R 6400 km). %3D
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