Machines
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With a class -2 lever, the fulcrum is at one end, the effort is at the other end and the load is in the middle. With this kind of lever, the direction of effort is not changed. Pushing up on the lever arm pushes up on the load. |
Another arrangement of the lever can be found in a class-3 lever. The fulcrum is at one end and the effort is applied between the fulcrum and the load. With this kind of lever, the direction effort is not changed. The load moves in the same direction as the effort. |