If the mass of a body is $M$ on the surface of the earth,the mass of the same body on the surface of the moon is

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).

Mass $M$ is divided into two parts $xM$ and $(1-x)M$. For a given separation,the value of $x$ for which the gravitational attraction between the two pieces becomes maximum is

Which of the following is incorrect about the gravitational force between two bodies?

The force of mutual attraction between any two objects by virtue of their masses is

Regarding fundamental forces in nature,the correct statement is