Illustrations showing the six mechanical powers: lever, wheel and axle, pulley, inclined plane, wedge, and screw.
Keywordslever, pulley, physics, screw, wedge, mechanics, Inclined Plane, simple machines, six mechanical powers, wheel and axle
GalleriesMiscellaneous Simple Machines
Ellsworth D. Foster ed. The American Educator (vol. 5) (Chicago, IL: Ralph Durham Company, 1921)