- #1

chantalprince

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## Homework Statement

A loudspeaker diaphragm is producing a sound for 2.5 s by moving back and forth in simple harmonic motion. The angular frequency of the motion is 7.54 x 10^4 rad/s. How many times does the diaphragm move back and forth?

## Homework Equations

angular freq. (W for omega) = change in theta/ change in T or W = 2 (pi) (f)

W = 2pi/ T

## The Attempt at a Solution

Ok, first of all, I need some help clarifying exactly what I'm looking for. Is it the number of times it goes around the circle? So, every 2 pi would be one time?? If so, I think I need to use W = 2 (pi) f, but I have frequency and W, so how do I manipulate this so I can "count" each time it goes around in a circle? (Sorry for the naive-ness of this. This topic confuses the heck out of me)

Thanks in advance :)