1M20.40 3 Classes of Levers

1M20.40 3 Classes of Levers

Show the three classes of levers with a mass, bar, pivot, and spring scale.

This diagram illustrates the three classes of lever using a hanging mass, a bar, a pivot and a spring scale. In the first-class lever diagram, the pivot point is positioned on the underside of the bar between the hanging mass at the left end of the bar and the spring scale at the right end. In the second-class lever diagram, the pivot sits on the underside of the bar at the left end, with the spring scale at right end and the mass hanging between them. In the third-class lever diagram, the mass hangs at the left end of the bar, with the pivot positioned on the upper side of the bar on the right end and the the spring scale pulling upward between them.