ABSTRACT
Two kinds of motion, linear and rotational, have been studied so far. Another type, known as the simple harmonic motion (SHM), where the acceleration of the object is not constant is of special interest. The acceleration of an object executing SHM is proportional and opposite in direction to the displacement of the object from its equilibrium position. This is because the force acting on the moving object is proportional, but opposite to its displacement. The simple pendulum and the oscillation of a block, attached to an ideal spring, once displaced slightly from the equilibrium position are examples of SHM.
