If the mass of two bodies is doubled and the distance between them is also doubled,what happens to the new gravitational force?

Three particles each of mass $m_{1}$ are placed at the corners of an equilateral triangle of side $\frac{L}{3}$. $A$ particle of mass $m_{2}$ is placed at the midpoint of any one side of the triangle. Due to the system of particles,the net gravitational force acting on $m_{2}$ is ($G$ = Universal constant of gravitation).

The gravitational force $F_g$ between two objects does not depend on

If the mass of a body is $M$ on the Earth's surface,then the mass of the same body on the Moon's surface is:

$A$ black hole is a:

Four identical particles of mass $m$ are kept at the four corners of a square. If the gravitational force exerted on one of the masses by the other masses is $\left(\frac{2 \sqrt{2}+1}{32}\right) \frac{Gm^2}{L^2}$,the length of the sides of the square is