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(d) √3GM²/ R²
(b) 3 m
(c) W₀ (1±2wv/g)
(d) increases by
A uniform ring of mass M and radius R is placed directly above a uniform sphere of mass 8 m and same radius R. The centre of ring is at a distance of d = √3 R from the centre of sphere. The gravitational attraction between the sphere and ring is
(d) √3GM²/ R²
(d) √3GM²/ R²
See lessThe maximum vertical distance through which a full dressed astronaut can jump on the earth is 0.5m. Estimate the maximum vertical distance through which he can jump on the moon, which has mean density 2/3rd that of the earth and radius one quarter that of the earth
(b) 3 m
(b) 3 m
See lessA body is responded on a spring balance in a ship sailing along the equator with speed V. If w is the angular speed of the earth and W₀ is the scale reading when ship is at rest, the scale reading when the ship is sailing is
(c) W₀ (1±2wv/g)
(c) W₀ (1±2wv/g)
See lessIf both the mass and radius of the earth, each decreased by 50%, the acceleration due to gravity would
(d) increases by
(d) increases by
See less