Question

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

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

Answer 1

Answer: (D)

F

Answer 2

According to Newton's law of gravitation, the force between two spheres is given by
$F=\frac{G M m}{r^{2}}$
From the relation, we can say the gravitational force does not depend on the medium between two spheres hence, it remains same ie, $F$.