Questions
The mass density of a planet of radius R varies with the distance r from its center as . Then the gravitational field is maximum at :
detailed solution
Correct option is B
For points inside the planet, at distance r from the center rTalk to our academic expert!
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A uniform ring of mass M and radius r is placed directly above a uniform sphere of mass 8 M and of same radius R. The centre of the ring is at a distance of d = R from the centre of the sphere. The gravitational attraction between the sphere and the ring is
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