Simple Atwood Machine, include ApparatuS and 2 pulleyS connected by a rod, 1.75inch plaStic pulleyS connected to a 3inch rod, Overall length iS 8.25inch, Two pulleyS are connected by a metal rod.
Air core solenoid, coils wound on a plastic tube with approximately 575 turns of copper wire, can carry a current of 5A continuously or 10A intermittently.