Demonstrates: Faraday's Law, motional emf, induced currents, energy conversion.
Description: As a coil on a pendulum passes between the poles of an electromagnet, induced currents cause a small bulb to light. The pendulum swings freely when the electromagnet is off. When the magnet is turned on, the amplitude of swing decreases on each pass showing conversion of gravitational energy to kinetic energy to electromagnetic energy to thermal energy. This demonstration can be done as a good introduction to demonstration 5K 20.10.
Instructions:
Items Used:
Notes: Set up on Eddy Current Brake. Dim lecture hall lights. Unavailable in 114/116. Math Description: None.
Size: 9' h x 30 Condition: Good. Hazard: Hitting yourself with the swing.
