Clock spring oscillator: Electrically driven and damped.

Resonance and Damped Harmonic Motion of a Driven Fly-Wheel. Drive Motor pushes the shaft, driving the pointer back and forth and pushing the clock spring which connects to the Copper Fly Wheel. The amplitude of the swing of the fly-wheel depends on the frequency of the motor. Note: There are two versions of this demo. The one at Pimentel is half the size of the one in Le Conte. The one in Pimentel uses external D.C. power supplies; Coarse and Fine Voltage controls are used to find resonance (1 sec. period). The Le Conte version has built in power supplies for driving and damping.