Question

1. Write the formula to find the magnitude of the gravitational force between the
earth and an object on the earth's surface,
i. Derive how does the value of gravitational force I between two ohjects change
when
a distance between them is reduced to half and
b. mass of an object is increased four times.​

Answer 1

Explanation:

here is the formula for ur question

Answer 2

Consider F is the force of attraction between an object on the surface of earth and earth.

Also consider ‘m’ is the mass of the object on the surface of earth and ‘Me’ is the mass of earth.

Therefore the formula for magnitude of the gravitational force between the earth and an object on the surface is given as

G = GM1m2 / r²