Question

Can a motion be oscillatory but not simple harmonic?

Answer 1

1. Yes, A motion can be Oscillatory but not necessarily simple harmonic.
2. An oscillatory motion is periodic in nature and if this motion is linear and the acceleration is proportional to the displacement of a particle from the equilibrium position.
3. For instance, A pendulum executes a simple harmonic motion whereas the earth moving around the sun is a periodic motion but not a simple harmonic.