Musical Animated Large-Angle Pendulums
Musical Animated Large-Angle Pendulums
The period of a pendulum depends on its amplitude in a complicated way. Here are four pendulums whose amplitudes are chosen so that their periods are commensurate. Plus, they're musical! Each pendulum plays a note when it passes through its lowest point. The musical frequencies are proportional to the pendulums' frequencies, so they play a happy tune. You can change which instrument they play.