Here G is a constant of proportionality called Universal Gravitational Constant. Where G is the gravitational constant M is one mass m is the second mass and r is the distance between the two masses. It is approximately 66741011 m3kg1s2.
G G represents the gravitational constant which has a value of 6674 1011Nmkg2 6674 10 11 N mkg 2.
The constant proportionality G in the above equation is known as the universal gravitation constant. PHY 117 Universal Law of Gravitation What is the magnitude of the gravitational force he exerts on the Earth. We can also express this relationship in equation form. In the Einstein field equations it quantifies the relation between the g.