Gravitation MCQs

16. Question

The radii of the earth and the moon are in the ratio 10 : 1 while acceleration due to gravity on th eearth’s surface and moon’s surface are in the ratio 6 : 1. The ratio of escape velocities from earth’s surface to that of moon surface is




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17. Question

Who among the following first gave the experimental velocity of G?




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18. Question

If escape velocity from the earth’s surface is 11.2 km/sec. then escape velocity from a planet of mass same as that of earth but radius one fourth as that of earth is




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19. Question

If g is the acceleration due to gravity of the earth’s surface the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth is




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20. Question

A thin uniform, circular ring is rolling down an inclined plane of inclination 30 degree  without slipping.Its linear acceleration along the inclined plane will be




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