Motor Demonstration Board Pack Size_10 the drilled aluminum ball gives

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

and a 1-degree protractor

and Lenz's law investigations

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

Walks students through four-stroke diesel operation on a 16-inch hand-cranked model

Motor Demonstration Board Pack Size_10 the drilled aluminum ball givesLow 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.