Define the amplitude of oscillation.

The amplitude of oscillation is the maximum displacement from the equilibrium position.

In simple harmonic motion, an object oscillates back and forth around its equilibrium position. The amplitude of oscillation is the maximum displacement from the equilibrium position. It is represented by the symbol A and is measured in metres (m) or any other unit of length.

The amplitude of oscillation is related to the energy of the system. The greater the amplitude, the greater the energy of the system. This is because the potential energy of the system is proportional to the square of the amplitude.

The amplitude of oscillation can be calculated using the equation A = (x_max - x_eq), where x_max is the maximum displacement from the equilibrium position and x_eq is the equilibrium position. For example, if a mass attached to a spring oscillates between -5 cm and +5 cm from its equilibrium position, then the amplitude of oscillation is A = (5 cm - (-5 cm)) = 10 cm.

In summary, the amplitude of oscillation is the maximum displacement from the equilibrium position and is related to the energy of the system. It can be calculated using the equation A = (x_max - x_eq).