Tofte Simulators

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Physics Playground

How it works, and what it shows: read the note on the blog.

Try next

Game Rope A rope made of a handful of points and one rule. See how stiff the solver lets it be.
Foucault's Pendulum Watch the Earth turn under a pendulum, and the half millimetre that can fake it.
Archimedes' Pulley Can any force move any weight? Stack up pulleys, add friction, and find out.

Every simulator runs on our own engine and shows its working. The notes on the blog explain how they work.