Double pendulum is a pendulum with another pendulum attached to its end, is a simple physical system that exhibits rich dynamic behavior with a strong sensitivity to initial conditions.
The motion of a double pendulum is governed by a set of coupled ordinary differential equations and is chaotic.
https://theabbie.github.io/DoublePendulum/
https://github.com/theabbie/DoublePendulum
How To Use?
Interactive Double Pendulum Playground