B3-02
Demonstrate the three classes of levers

Referring to the three photographs above:

First class lever (top): the pivot is between the load and the applied force (push down with hand or pull down with spring scale at left in photo).

Second class lever (lower left): the load is between the pivot and the applied force.

Third class lever (lower right): the applied force is between the load and the pivot.



Note: Look this over before class; you must change around the various components during the lecture.
ME1, OS0