EM5.5 Pendulums in Gap of Electromagnet

A large electromagnet is connected to a power supply. With the electromagnet off, a pendulum consisting of a circular plate will simply oscillate through the gap. When the magnet is turned on, the plate will stop once it enters the gap. Variations have plates of different material-conducting and non-conducting-and one plate that has cuts in the vertical direction. This last plate will oscillate through the gap with the magnet on due to the break of current in the plate. A plate with circular cuts does not.

Equipment Location: rolling electromagnet, DC supply, SW corner