Question: what is gravitational field intensity?
Answer: The gravitational field intensity (EG) or (g) is the force on a unit mass at a point in the field. Since the force (F) on a body of mass m in a gravitational field of a body of mass M = GMm/r2 you can see that the force per unit mass is given by F/m. So: Gravitational Field Intensity (EG) = (g) = F/m = GM/r2.