Math 141-142 home page
Motion of a Spring
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The following Quicktime animation shows how the motion of a spring generates a cosine curve. As the dot on the left goes up and down (representing a weight attached to a spring), the dot on the right tracks the y-coordinate of the left dot as the time x increases.
If the animation below does not play inside your browser, you can download the movie and play it in Quicktime Player.