A directory of useful objects found on the web for teaching Maths.
Interactive, Publisher, PhET, Simulation
Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, and the amplitude of the swing. It's easy to measure the period using the photogate timer. You can vary friction and the strength of gravity. Use the pendulum to find the value of g on planet X. Notice the anharmonic behavior at large amplitude.
2 June 2014 Edit: 27 February 2021
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