Simple pendulum — explore period, length, gravity, and damping
🖱️ Drag bob to set angle and release
For small angles, the period T = 2π√(L/g) depends only on length and gravity — not mass or amplitude. The angular equation of motion is θ'' = −(g/L)sin(θ) − b·θ'. Damping b causes the amplitude to decay exponentially. Energy oscillates between kinetic (max at bottom) and potential (max at extremes). Galileo noticed this isochronism property of pendulums.