Pendulum (mechanics)

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Pendulum (mechanics)

Dbpedia

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A pendulum is a body suspended from a fixed support so that it swings freely back and forth under the influence of gravity. When a pendulum is displaced sideways from its resting, equilibrium position, it is subject to a restoring force due to gravity that will accelerate it back toward the equilibrium position. When released, the restoring force acting on the pendulum's mass causes it to oscillate about the equilibrium position, swinging it back and forth. The mathematics of pendulums are in general quite complicated. Simplifying assumptions can be made, which in the case of a allow the equations of motion to be solved analytically for small-angle oscillations.

English Wikipedia http://en.wikipedia.org/wiki/Pendulum_(mechanics)

Spanish wikipedia http://es.wikipedia.org/wiki/Péndulo_simple

Wiki page external link http://mathworld.wolfram.com/MathieuFunction.html http://www.ulb.tu-darmstadt.de/tocs/129360481.pdf