PPolySim OS
For Hobbyists & Makers · Magnetic Pendulum

Magnetic Pendulum for a car braking

Built for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker. Simulate a car braking live below — adjust the inputs and watch it respond, right in your browser.

Magnetic PendulumLive

Controls

A pendulum bob is pulled toward three magnets. Which one it lands on depends so sensitively on the start that the basins of attraction form a fractal. Drag a magnet to move it, or click empty space to drop the bob there.

Presets

▶ Run in Python

Data Inspector

Magnets3
Damping0.5% / step
Magnet strength0.60
Basinsfractal

Governing equation

Reading this result: Which magnet the bob settles on depends with extreme sensitivity on where it starts: neighboring drop points can end at different magnets, carving fractal basins of attraction. At friction 0.995 it settles at a moderate pace. Magnet strength 0.6 balances against the central spring.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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More with Magnetic Pendulum

Frequently asked questions

Is this good for hobbyists & makers?
Yes — this version of "Magnetic Pendulum for a car braking" is framed for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker.
Do I need to install anything?
No. It runs in any modern browser, free, with no account required.