1. What types of situations are modelled using simple harmonic motion?

Examples of simple harmonic motion include:

  • A mass attached to the end of elastic or a spring.
  • The depth of the water as tides go in and out.
  • A pendulum, say in a clock, as it swings backwards and forwards.

2. What is the amplitude of a simple harmonic motion?

The amplitude (a) is the distance between the central point and the extreme points of the motion.