Levers - Classes of Levers We have already established that if you have played on a teeter-totter, used a rake, or swung a baseball bat, you have used a lever. The human arm itself is a lever. But not all levers are of the same type. There are three classes of levers, classified by the locations of the fulcrum, the input force, and the output force. This is an introductory video on the classes of levers: Watch the introductory video first, then click on the buttons to learn more specifics about each class of levers and some real-life examples.
Levers - Classes of Levers
We have already established that if you have played on a teeter-totter, used a rake, or swung a baseball bat, you have used a lever. The human arm itself is a lever. But not all levers are of the same type. There are three classes of levers, classified by the locations of the fulcrum, the input force, and the output force.
This is an introductory video on the classes of levers: Watch the introductory video first, then click on the buttons to learn more specifics about each class of levers and some real-life examples.