Angular frequency:

$\overline{){\mathbf{\omega}}{\mathbf{=}}{\mathbf{2}}{\mathbf{\pi}}{\mathbf{f}}}$

In the above diagram, when moving from -A to +A and back to -A, we'll encounter 4 points where the elastic potential energy is equal to the kinetic energy

A harmonic oscillator has angular frequency ω and amplitude *A*.

**(a) **How often is elastic potential energy is equal to the kinetic energy in each cycle?**(****b) **What is the time between occurrences?

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