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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Taking the earth to be a uniform sphere of radius 6400 km and the value of g at the surface to be 10 m/s^2 calculate the energy needed to raise a satellite of mass 2000 kg to a height of 800 km a above the earth’s surface and to set it into circular orbit at that altitude.

Taking the earth to be a uniform sphere of radius 6400 km and the value of g at the surface to be 10 m/s^2 calculate the energy needed to raise a satellite of mass 2000 kg to a height of 800 km a above the earth’s surface and to set it into circular orbit at that altitude.

Find the percentage decrease in weight of a body when taken 16 km below the surface of the earth. Take radius of the earth as 6400 Km.