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Pages in category "Pendulums" The following 39 pages are in this category, out of 39 total. This list may not reflect recent changes. ...
"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.
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 .
Air resistance damps the oscillation, so some Foucault pendulums in museums incorporate an electromagnetic or other drive to keep the bob swinging; others are restarted regularly, sometimes with a launching ceremony as an added attraction. Besides air resistance (the use of a heavy symmetrical bob is to reduce friction forces, mainly air ...
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.
Two types of solar time are apparent solar time (sundial time) and mean solar time (clock time). The delay curve—above the axis a sundial will appear fast relative to a clock showing local mean time, and below the axis a sundial will appear slow. Mean solar time is the hour angle of the mean Sun plus 12 hours.
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