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"Simple gravity pendulum" model assumes no friction or air resistance. A pendulum is a device made of a weight suspended from a pivot so that it can swing freely. [1] 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.
This is a list of Foucault pendulums in the world: Artistic rendition (highly exaggerated) of a Foucault pendulum showing that the Earth is not stationary, but rotates. Wikimedia Commons has media related to Foucault pendulums .
For other types and uses of pendulums, see: Category:Pendulums; Mackerras Pendulum, a model devised by Malcolm Mackerras to predict election outcomes; Pendulum (torture device), a device allegedly used by the Spanish Inquisition; Pendulum Instruments, a Swedish manufacturer of scientific instruments
Coupled pendulums can affect each other's motion, either through a direction connection (such as a spring connecting the bobs) or through motions in a supporting structure (such as a tabletop). The equations of motion for two identical simple pendulums coupled by a spring connecting the bobs can be obtained using Lagrangian mechanics .
It is a weight-driven clock (the weight chain is removed) with a verge escapement (K,L), with the 1 second pendulum (X) suspended on a cord (V). The large metal plate (T) in front of the pendulum cord is the first illustration of Huygens' 'cycloidal cheeks', an attempt to improve accuracy by forcing the pendulum to follow a cycloidal path ...
A weight (also known as a mass) is an object, normally with high density, whose chief task is to have mass and exert weight (through gravity). It is used for different purposes, such as in: It is used for different purposes, such as in:
A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. The advantage of a pendulum for timekeeping is that it is an approximate harmonic oscillator: It swings back and forth in a precise time interval dependent on its length, and resists swinging at other rates.