Clocks are mechanisims that include a pendulum or balance wheel whose repeated patterns of movement define equal time intervals, one after another. ... Actually, simple harmonic motion is an idealization that applies only when friction, finite size, and other small effects in real physical systems are neglected.

Why do we care about simple harmonic motion?

Whilst simple harmonic motion is a simplification, it is still a very good approximation. Simple harmonic motion is important in research to model oscillations for example in wind turbines and vibrations in car suspensions.

Why is simple harmonic motion isochronous?

Explanation: simple harmonic motion(SHM) is isochronous. this means the period of the oscillations is independent of the amplitude. this hold true when the oscillation is undamped .