Gravitation

Related Questions

• The value of ‘g’ at a particular point is $9.8\,m/{s^2}$. Suppose the earth suddenly shrinks uniformly to half its present size without losing any mass. The value of ‘g’ at the same point (assuming that the distance of the point from the centre of earth does not shrink) will now be

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• The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is

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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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• A spherical planet far out in space has a mass ${M_0}$ and diameter ${D_0}$. A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity which is equal to

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• The earth (mass $ = 6 \times {10^{24}}\,kg)$) revolves round the sun with angular velocity $2 \times {10^{ - 7}}\,rad/s$ in a circular orbit of radius $1.5 \times {10^8}\,km$. The force exerted by the sun on the earth in newtons, is

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