- from Simple Machines
Think of a long, strong stick. That’s a lever.
The stick is propped up on a small object called the fulcrum. Now imagine holding one end of the stick. A heavy rock is on the other end. That rock is called the load. By pushing down on the stick, you use effort. That effort lets you lift the rock. In levers, the effort is applied at a different point from the load. And where you put the fulcrum affects how much effort you’ll use. The effort is the push or pull you need to move a load. For example, the closer the load is to the fulcrum, the less effort you will need to lift it. But your effort will move a greater distance than when the load is farther from the fulcrum. In that case, your effort will be more, but the distance it moves will be less.