Wilberforce pendulum: Oscillates between rotation and up-down.

3A70.10 • B+15+5

diagram for demo

Wilberforce pendulum. This apparatus is designed so that the period of the up and down oscillation is nearly equal to the period of the torsional oscillation. Slowly the apparatus switches between pure up and down mode to pure torsional mode. Note: The model in Pimentel has a 4' spring and a much longer period (~15 sec). The tabletop model can be provided on request.

Related Demos

3A70.25 Two large pendulums coupled with spring. 3A70.20 Two pendulums on a frame of flexible steel. 3A70.35 Two balls hung on the same string, one in middle, one at the end. 3A70.31 Three large pendulums coupled with two springs.
B+15+0 Two large pendulums coupled with spring. B+15+10 Two pendulums on a frame of flexible steel. B+15+15 Two balls hung on the same string, one in middle, one at the end. B+15+1 Three large pendulums coupled with two springs. B+15+20 5 Metronomes on board and cans sync their oscillations B+15+25 Applet: Normal Modes B+15+26 Coupled Oscillations Simulation