What is meant by superposition of gravitational field?

Explanation

The total gravitational field at a point P due to all the masses is given by the vector sum of the gravitational field due to the individual masses. This principle is known as superposition of gravitational fields.
`vec(E)_("total")=vec(E)_(1)+vec(E)_(2)+....+vec(E)_(n)`
`=-(Gm_1)/(r_(1)^(2))hat(r)_(1)-(Gm_2)/(r_(2)^(2))hat(r)_(2)-....-(Gm_n)/(r_(n)^(2))hat(r)_(n)`
`overset(n)underset(i=1)(Sigma)(Gm_1)/(r_(i)^(2))hat(r)_(i)`