Login processing...

Trial ends in Request Full Access Tell Your Colleague About Jove

15.2: Characteristics of Simple Harmonic Motion

JoVE Core

A subscription to JoVE is required to view this content. Sign in or start your free trial.

Characteristics of Simple Harmonic Motion

15.2: Characteristics of Simple Harmonic Motion

The key characteristic of the simple harmonic motion is that the acceleration of the system and, therefore, the net force are proportional to the displacement and act in the opposite direction to the displacement. Additionally, the period and frequency of a simple harmonic oscillator are independent of its amplitude. For example, diving boards move faster or slower based on their thickness. A stiff, thick diving board has a large force constant, which causes it to have a smaller period, while a thin diving board moves faster and with a higher period. The period of a simple harmonic oscillator is also affected by its mass. A heavier person on a diving board bounces up and down slower than a person with a relatively lighter weight.

The simple harmonic motion of a system results in a sine and cosine waveform. As the amplitude changes, the maxima and minima of the curve also change, but the period and frequency remain unaffected. By altering the phase angle, the curve shifts toward the right for negative values and toward the left for positive values. In general, negative phase angle values shift the standard cosine curve rightward.

Suggested Reading


Characteristics Simple Harmonic Motion Acceleration Net Force Displacement Opposite Direction Period Frequency Amplitude Diving Boards Force Constant Mass Waveform Sine Cosine Maxima Minima Curve Phase Angle

Get cutting-edge science videos from JoVE sent straight to your inbox every month.

Waiting X
Simple Hit Counter