Out of all the Simple machine experiments, this has to be one of the most popular. Students learnt that when describing the lever, they must be able to identify the fulcrum, the load and effort/force. With that said, students performed three different experiments (1st class lever, 2nd class lever and 3rd class lever). Below, students are demonstrating how a 1st class lever works. It is this knowledge that they then applied to learning about the wheel and axle.
This video represents how a lever works when the fulcrum is placed equally between two loads of equal weight.
This video represents how moving the fulcrum closer to the load makes work easier.
This video represents that when you move the fulcrum away from the load the more difficult it becomes to lift the load.
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