# Simple Harmonic Motion and Wave Motion

Hi,

I was wondering if anyone could explain Simple Harmonic Motion. My physics teacher has tried and I have read the parts in the book, but I am still confused. I know how to find the amplitude from the standard form equations, but I really just don't understand how to get the period and the frequencies. Does it have something to do with the $$\omega$$t+$$\phi$$ thing or am I just way off? (If it doesn't, please explain what $$\omega$$t+$$\phi$$ tells you.) Thank you!

-- Commodore

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Astronuc
Staff Emeritus
For a sinusoidal (sin or cos) wave, the parameter $\omega$ is the angular velocity and multiplied by t gives an angular position which is linear with time - $\omega$t is always increasing. The other parameter in the argument, $\phi$, is the phase angle, which simply shifts the sine wave in time.