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A uniform ring of mass m and radius a is...

A uniform ring of mass `m` and radius `a` is placed directly above a uniform sphere of mass `M` and of equal radius. The centre of the ring is at distance `sqrt(3)a` from the centre of the sphere. Find the gravitational force exerted by the sphere on the ring.

A

`(8GM^2)/(R^2)`

B

`(2GM^2)/(sqrt(3)R^2)`

C

`(2GM^2)/(2R^2)`

D

`(sqrt(3)GM^2)/(R^2)`

Text Solution

Verified by Experts

The correct Answer is:
D
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