Gravitation

Related Questions

• Radius of earth is around 6000 km. The weight of body at height of 6000 km from earth surface becomes

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• The masses and radii of the earth and moon are ${M_1},\,{R_1}$ and ${M_2},\,{R_2}$ respectively. Their centres are distance d apart. The minimum velocity with which a particle of mass m should be projected from a point midway between their centres so that it escapes to infinity is

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• What should be the angular speed of earth, so that body lying on equator may appear weightlessness $(g = 10\,m/{s^2},\,\,R = 6400\,km)$

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• The least velocity required to throw a body away from the surface of a planet so that it may not return is (radius of the planet is $6.4 \times {10^6}m,\,\,g = 9.8\,m/se{c^2})$

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• The height of the point vertically above the earth’s surface, at which acceleration due to gravity becomes 1% of its value at the surface is (Radius of the earth = R)

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