Demo equipment required:
Clamp stand/boss/clamp (basic pendulum set up)
100g weight on a springĀ
Iron rod (5B5)
Neodymium magnets x 3 (Super magnets tray 5B6) - One to be attached to the weight and rod/Two to be attached to the bottom of the rod.
Variable resistor box (6A2)
2100 Solenoid turn coil (6A6)