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## Homework Statement

My textbook states that for simple harmonic motion, the sinusoidal graph of the x (displacement) as a function of time can be created using the "Equation of motion".

## Homework Equations

The equation of motion ##A \cos (\omega t + \phi)##

## The Attempt at a Solution

I know that ##A## stretches the cosine graph vertically, but that the frequency is unaffected. How do ##\omega## and ##\phi## affect the graph?