CONCEPT: Simple Harmonic Motion: - It is a special type of periodic motion, in which a particle moves to and fro repeatedly about a mean position. - In linear S.H.M. a restoring force that is always directed towards the mean position and its magnitude at any instant is directly proportional to the displacement of the particle from the mean position at that instanti.e. Restoring force Displacement of the particle from the mean position. ⇒f∝−x⇒f=−kx Where k is known as force constant. - And when a simple pendulum is displaced from its mean position, it will return back to its original position because of gravitational force acting on it.
