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This applet shows a hanging mass on a spring. Users may add or remove mass from the spring to change the equilibrium point, or may observe the oscillatory motion on a graph showing velocity vs. position.
This applet is the same one that we looked at in class, but I think is very useful. The relationship between the motion of an object attached to the spring and circular motion is demonstrated. It is still funny how the applet moves so fast. The relationship of the force and velocity vectors is shown on the applet. The most interesting aspect of this applet is that one circular orbit is equal to one oscillation.
14 years ago
Nicely done demonstration that displays clearly the concepts involved in simple harmonic motion. Similar demos are common. Aimed at introductory physics students.