>[!abstract] >In physics and mathematics, in the area of dynamical systems, a double pendulum, also known as a chaotic pendulum, is a pendulum with another pendulum attached to its end, forming 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 pair of coupled ordinary differential equations and is chaotic (Wikipedia, 2025). >[!related] >- **North** (upstream): [[Nonlinear system]] >- **West** (similar): — >- **East** (different): — >- **South** (downstream): —