🕰️ Large-Angle Pendulum - 3D Test Rig

A Blender-modelled wooden gantry with a brass-bob pendulum, protractor and drive dial: exact nonlinear dynamics, a translucent linear twin, elliptic-integral period, air drag, pivot friction, periodic drive and force arrows.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install