Question

what is called gravitatinal force

Answer 1

Gravitational Force is a one of the four fundamental force which acts along the center of two bodies. Gravitational Force is always a attractive force, which is directly proportional to the product of masses of two bodies and is inversely proportional to the square of distance between them.

Answer 2

The force exerted by the earth on the object is called gravitational force.
(universal gravitational force=9.8m/s.)