Question

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

• A. $F$
• B. $\frac{F}{3}$
• C. $\frac{F}{9}$
• D. $3F$

Answer 1

The correct option is A $F$

Universal law of gravitation states that
$F=\frac{G{m}_1{m}_2}{r^2}$

This force is independent of the medium in which the masses are placed.
So, the force remains the same.