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danpost presents ...

2012/10/10

Pendulum Demo

This pendulum demo includes a pendulum that can vary in length and swing; plus a range bar with graphing on a scroll.

Use 'up' and 'down' to adjust length of wire.
At any time you can adjust the swing by dragging to a new angle. The best place to grab the pendulum is at the ceiling plate.

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This scenario is a member of: Demos by danpost

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MatheMagician

2012/10/11

Are you calculating the period of the pendulum using this equation: 2PI*sqrt(length/gravity)
danpost

2012/10/11

I am using a cosine function to regulate the pendulum. Multiplied by the maximum angle give the current angle of the pendulum. The length of the wire is an inverse factor of the incremental change in the function. I do not know how this translates in terms of its period.
MatheMagician

2012/10/11

The principle is, the pendulum should be increasing by the square root function of its length.
A new version of this scenario was uploaded on Thu Oct 11 15:20:30 UTC 2012 Pendulum swing period now implements 2 * PI * sqrt ( g / L ).
A new version of this scenario was uploaded on Thu Oct 11 15:38:44 UTC 2012 Pendulum swing period now implements 2 * PI * sqrt ( L / g ).
A new version of this scenario was uploaded on Fri Oct 12 12:58:20 UTC 2012 A demonstration of a pendulum in action. Completed documentation. Make graph a little smoother by connecting the points.
A new version of this scenario was uploaded on Fri Oct 12 13:11:52 UTC 2012 A demonstration of a pendulum in action. Completed documentation. Make graph a little smoother by connecting the points.
A new version of this scenario was uploaded on 2020-10-31 11:09:37 UTC