Motor Demonstration Board Pack Size_10 and Lenz's law investigations

and Lenz's law investigations

Tandem double plastic pulley pairing 38mm and 50mm low-friction wheels on an open-sided steel frame

For image formation studies on optical benches

the drilled aluminum ball gives a lightweight contrast to steel and brass balls of the same size in pendulum period and momentum-transfer demonstrations

letting students rub one half against the same cloth and compare insulator and conductor behavior in triboelectric charging

Motor Demonstration Board Pack Size_10 and Lenz's law investigationsLow voltage DC motor with a current limiting series resistor on a demonstration base with 4mm plug connections, sized as a load that visibly spins when current flows in the circuit.