Lesson 3

Wheel IconThe Wheel & The Ramp icon Axle


To look at the relationship between wheel radius and effort force, use the data from Table 2 to complete the graph in your lab packet.

Let's take a closer look at this wheel and the attached screw (axle) to get a better understanding of what is happening.


We can think of the wheel and axle as a specialized lever.
Click on the wheel to see this relationship.


Recall from the lever activity that as the length of the effort arm of a lever is increased, the effort force needed is reduced.