Mechanics is the branch of physics which describes and predicts the conditions of rest or motion of bodies under the action of forces. The study of mechanics can be divided into

The Classical Mechanics was formulated by Newton. It is also called Newtonian Mechanics. The 6 fundamental principles are:

1) the parallelogram law for addition of forces

2) the principle of transmissibility

3) Newton's first law of motion

4) Newton's second law of motion

5) Newton's third law of motion

6) Newton's law of gravitation

Newtonian Mechanics was re-formulated by d'Alembert, Lagrange and Hamilton. To distinguish the two, the Classical Mechanics is referred as Vectorial Mechanics and the re-formulated Classical Mechanics is referred as Analytical Mechanics. Einstein formulated his