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Topic: Simple harmonic motion

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 PIRA 3A40.00 SIMPLE HARMONIC MOTION   (Site not responding. Last check: 2007-11-07)
Using a 78 rpm phonograph turntable to synchronize a pendulum and ball on a turntable.
In a variation of the simple swinging pendulum, the "portulum", a ball, driven by short blasts of air, rolls along a curved tube.
A large ball oscillates on a spring and a pen on a rider below the ball traces on a roll of moving paper.
www.physics.ncsu.edu /pira/3oandw/3A40.html   (800 words)

 PlanetPhysics: simple harmonic oscillator   (Site not responding. Last check: 2007-11-07)
A simple harmonic oscillator is a mechanical system which consists of a particle under the influence of a Hooke's law force.
It is rather simple to solve this equation in tems of trigonometric functions to obtain a general solution.
This is version 2 of simple harmonic oscillator, born on 2005-08-14, modified 2006-03-28.
planetphysics.org /?op=getobj&from=objects&id=58   (177 words)

 ipedia.com: Cycles Article   (Site not responding. Last check: 2007-11-07)
Cycles may be due to restorative forces causing repetition as in simple harmonic motion, regularity of motion such as daily, monthly, yearly, and other astronomical cycles, or being affected by something else that has these qualities.
Pythagoras' study of music and Ptolemy's motion of the planets were early scientific studies of cycles.
Our understanding of weather cycles being attributable to annual and monthly astronomical motions was extended by Milutin Milankovitch who showed that ice ages were closely related to variations in the Earth's orbital eccentricity, axial tilt and the precession of the equinoxes which have periods of around 100,000 years, 40,000 years and 26,000 years respectively.
www.ipedia.com /cycles.html   (794 words)

 Oscillations & Waves
Various combinations of masses and moments of inertia can be placed on the platform to study the effect of changing the moment of inertia on the period of rotational SHM.
Video Encyclopedia :Compare the period of a bar supported at the end with a simple pendulum of 2/3/length.
Video Encyclopedia :A hoop oscillates with the same period as arcs corresponding to parts of the hoop.
pirt.asu.edu /detail_3.asp?ID=379&offset=1   (268 words)

 simple, simplest, simples, simpler- WordWeb dictionary definition
"a simple problem"; "simple mechanisms"; "a simple design"; "a simple substance"
"the simple passage of time was enough"; "the simple truth"
"a simple country schoolhouse"; "her fl dress--simple to austerity"
www.wordwebonline.com /en/SIMPLE   (69 words)

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