Universal Law of Gravitation

Law of Gravitation is an basic fundamental lesson for every one to learn. Gravitation force is also an important lesson to study. I would like to share my knowledge on universal law of gravitation.
Introduction to universal law of gravitation
The Law of Universal Gravitation explains the phenomenon of gravitation. Gravitation is the reason for the fall of the bodies, why the Earth and other planets revolve around the Sun, it is the reason behind the ties and other very well stated phenomena.
Illustration of Universal Law of Gravitation -
Let me also help you understand gravitation force with the help of sample illustration.
Gravitational force on point mass m1 is the
vector sum of the gravitational forces exerted by m2, m3 and m4. The force of attraction between a hollow spherical shell of uniform density and a point mass situated outside is just as if
the entire mass of the shell is concentrated at the centre of the shell.
I hope with this illustration on universal law of gravitation you got an good idea on gravitation. If you still need more help on Physics then keep reading.. i may also help you understand on law of conservation of energy