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When a pendulum isÂ displaced from its restingÂ equilibrium position, it is subject to arestoring force due toÂ gravity that will accelerate it back toward the equilibrium position. When released, the restoring force combined with the pendulum’s mass causes it toÂ oscillate about the equilibrium position, swinging back and forth. The time for one complete cycle, a left swing and a right swing, is called theÂ period.
The photograph was taken by Louis Dallara at the Franklin Institute, Philadelphia, PA
The photo isÂ submittedÂ to http://www.photofriday.com/
This work, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States License.