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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 1 > Chapter 12 - Gravitation > The density of newly discovered planet is twice that of the earth. The acceleration due to gravity at the surface of the planet is equal to that at the surface of the earth. If the radius of the earth is R the radius of the planet would be

The density of newly discovered planet is twice that of the earth. The acceleration due to gravity at the surface of the planet is equal to that at the surface of the earth. If the radius of the earth is R the radius of the planet would be

If R is the radius of the earth and g the acceleration due to gravity on the earth's surface the mean density of the earth is