Gravitation

Related Questions

• The radius of the earth is 6400 km and $g = 10m/{\sec ^2}$. In order that a body of 5 kg weighs zero at the equator, the angular speed of the earth is

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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 escape velocity for the earth is 11.2 km/sec. The mass of another planet is 100 times that of the earth and its radius is 4 times that of the earth. The escape velocity for this planet will be

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• Two particles of equal mass go round a circle of radius R under the action of their mutual gravitational attraction. The speed of each particle is

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• A spring balance is graduated on sea level. If a body is weighed with this balance at consecutively increasing heights from earth's surface, the weight indicated by the balance

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