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.
KidWind simpleGEN, easy-to-build AC generator that allows students to explore the basics of electrical generator design, Recommended for College, High School, and Middle School Science, classroom pack