MATH SINUSOIDAL APPLICATION
posted by Anonymous .
Would pulling a roll of thread create a sinusoidal function?
please suggest some real life application of sinusoidal wave that i can experiment with...

yes, it would, if you are graphing the position of any point on the spool except the center of the axle.
anything involving a rotating object will produce a sinusoidal function. Even alternating electrical current does, since it is produced by rotating magnets.
If you want to play around with graphing, visit
http://rechneronline.de/functiongraphs/
where you can enter various formulas and can show up to three at a time. Makes it easy to see how tweaking the parameters affects the graph.