FLE123

Today we learned that levers come in different classes. It all depends on what's in the middle of the lever. A Class 1 lever has the FULCRUM somewhere between the load & effort. A Class 2 lever has the LOAD between the effort & fulcrum. A Class 3 lever has the EFFORT between the load & the fulcrum. The way to remember this FLE123. As long as you know what is in the middle, you know what class lever it is. Remember in the middle ONLY means that it is somewhere between the other two lever parts. We also learned that a Convention is a generally accepted symbol. For our experiments, a triangle is the fulcrum, a square is the load, and a circle is the effort. Tomorrow we will try to set up the different lever classes.

Quiz alert:  You will be given a practical exam this week. You will be asked to use your lever and figure out the effort needed to lift the load. You will be asked to graph your results.