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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 10 - Gravitation > The mass of a spaceship is 1000 kg. It is to be launched from the earths surface out into free space. The value of g and R (radius of earth) are 10 m/s 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 earths surface out into free space. The value of g and R (radius of earth) are 10 m/s and 6400 km respectively. The required energy for this work will be :

A planet in a distant solar system is 10 times more massive than the earth and its radius is 10 times smaller. Given that the escape velocity from the earth is 11ms^−1 the escape velocity from the surface of the planet would be