MEDIUM
NEET
IMPORTANT
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Three identical bodies (each mass ) are placed at the vertices of an equilateral triangle of arm , keeping the triangle as such by which angular speed the bodies should be rotated in their gravitational fields so that the triangle moves along circumference of circular orbit.
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Important Questions on Gravitation
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Four particles of masses and are kept in sequence at the corners of a square of side . The magnitude of gravitational force acting on a particle of mass placed at the centre of the square will be:
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The tidal waves in the sea are primarily due to
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During the journey of spaceship from earth to moon and back, the maximum fuel is consumed:-
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The distance between the centers of Earth and Moon is and the mass of the earth is times that of the moon. At what distance from the center of the earth the gravitational field will be zero?
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Following curve shows the variation of intensity of gravitational field with distance from the centre of solid sphere(r) :
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Assume that a tunnel is dug through earth from North pole to south pole and that the earth is a non-rotating, uniform sphere of density . The gravitational force on a particle of mass m dropped into the tunnel when it reaches a distance r from the centre of earth is :
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Mars has a diameter of approximately of that of earth and mass of of that of earth. The surface gravitational field strength on mars as compared to that on earth is greater by a factor of:-
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Three equal masses of each are placed at the vertices of an equilateral triangle and a mass of is placed at the centroid of the triangle which is at a distance of from each of the vertices of the triangle. The force, in newton, acting on the mass of is:
