Write the formula to find the magnitude of the gravitational force between the earth and an object on the surface of the earth. [2 MARKS]
Each point: 1 Mark
Let m1 be the mass of the Earth and m2 be the mass of an object on its surface. If r is the radius of the earth, then according to the universal law of gravitation, the gravitational force (F) acting between the earth and the object is given by the relation:
F=Gm1m2r2