A mass is oscillating up and down on a spring. In the above graph of
its vertical position as a function of time. The amplitude is
m.

Sinusoidal Function refers to a mathematical curve with a smooth and periodic oscillation. Its name comes from the sine function and is characterized by the amplitude or the maximum displacement or distance moved by a point on a vibrating body measured from its equilibrium position.

To calculate the amplitude from a graph, we measure the maximum point and the minimum point the wave reaches. Then we subtract both values and divide the result by 2.

The shown wave in the figure has a maximum value of 8 m and a minimum value of -8 m. The distance from the maximum to the minimum is 8-(-8)= 16 m, thus the amplitude is 16/2= 8m.

Amplitude= 8 m

A mass is oscillating up and down on a spring. In the above graph of its vertical position as a function of time. The amplitude is m.

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A mass is oscillating up and down on a spring. In the above graph of
its vertical position as a function of time. The amplitude is
m.