CHAPTER 7 : OSCILLATORY MOTION
Motion which is periodic, repeated over the same path either
to and fro about a fixed point or a fixed line, is called Oscillatory or Vibrational
7.1 Linear Simple Harmonic Motion (S.H.M.)
The periodic to and fro motion on a straight line about a fixed
point (called mean or equilibrium position) under the force always directed
towards the mean position, and proportional to the distance from the mean position
is called Linear S.H.M.
The nature of S.H.M. can be studied by obtaining expressions
for acceleration, velocity and displacement from the defining equation; this
can be done by integrating F = -Kx ; however the reference circle method is
more convenient and therefore it is used here.