Gravitation

Related Questions

• The escape velocity for a rocket from earth is 11.2 km/sec. Its value on a planet where acceleration due to gravity is double that on the earth and diameter of the planet is twice that of earth will be in km/sec [NCERT 1983;

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• Weight of 1 kg becomes 1/6 on moon. If radius of moon is $1.768 imes {10^6}\,m$, then the mass of moon will be

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• If the radius of a planet is four times that of earth and the value of g is same for both, the escape velocity on the planet will be

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• A body of mass m rises to height h = R/5 from the earth's surface, where R is earth's radius. If g is acceleration due to gravity at earth's surface, the increase in potential energy is

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• Let g be the acceleration due to gravity at earth's surface and K be the rotational kinetic energy of the earth. Suppose the earth's radius decreases by 2% keeping all other quantities same, then

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