🪀 Double Pendulum
A chaotic physics toy. Tiny changes in starting conditions lead to wildly different motion.
Simulation
Same physics every time — chaos comes from the math, not randomness.
Why it's chaotic
The second bob is driven by the first. Small rounding differences compound over time, so the path becomes unpredictable — that's deterministic chaos.
Controls
- Reset — start the same swing again
- Pause / Resume — freeze or continue
- Trail — show the path of the second bob
Physics
Two rods, two bobs. Gravity and coupling create the motion. No randomness — just coupled differential equations.