Page 61 - Force 10

Relation between “g” and “G”

Let a body of mass m be on the Earth surface. Then the force of gravity on the body is
given by{the force of attraction between the earth and the body}

F = G …………….(i)

2

The weight of the body is given by

W = mg ………………….(ii)

Weight of a body is the force of gravity acting on it. So from (i) and (ii), we get

{The force of gravity acting on a body is called weight of the body.}

mg = G

2

Or, g = ………….(iii)

2
This gives the relation between g and G. Using this relation the acceleration

due to gravity can be calculated.