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(A) The gravitational force between two masses $m$ and $M$ separated by a distance $r$ is given by Newton's Law of Gravitation: $F = G \frac{mM}{r^2}$

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$F$

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(A) The gravitational force between two masses $m$ and $M$ separated by a distance $r$ is given by Newton's Law of Gravitation: $F = G \frac{mM}{r^2}$.This force depends only on the masses of the objects and the distance between them.Unlike electrostatic force,the gravitational force is independent of the medium in which the objects are placed.Therefore,even when the space around the masses is filled with a liquid,the gravitational force remains unchanged.Thus,the new force is $F$.

Two spheres of mass $m$ and $M$ are situated in air and the gravitational force between them is $F$. The space around the masses is now filled with a liquid of specific gravity $3$. The gravitational force will now be

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