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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > The mass of a spaceship is 1000 kg. 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 ms^2 and 6400 km respectively. The required energy for this work will be:

The mass of a spaceship is 1000 kg. 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 ms^2 and 6400 km respectively. The required energy for this work will be:

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.