Hooke's Law

Here are two applets students may like to try: A. The first is a simple "experiment" showing that the extension of a spring is proportional to the force applied: http://www.absorblearning.com/media/attachment.action?quick=5l&att=394 B. For the second applet, you can try: looking for the unknown masses. observing the potential energy at different extensions of each spring. varying the

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