Experiment with three pendulums that are 1-ft, 2.25-ft, and 9-ft long. Determine how many times the 2.25-ft and 9-ft pendulums swing during the time it takes the 1-ft pendulum to swing 30 times. Find ...
A 1-kg mass pendulum is held up to the demonstrator's face and is released. Because of conservation of energy, the mass will not swing higher than the height at which it was released. In fact, because ...
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