Levers are one of the basic tools that were probably used in prehistoric times levers were first described about 260 bc by the ancient greek mathematician archimedes 287 212 bc a lever is a simple machine that makes work easier for use it involves moving a load around a pivot using a force. Levers are simple machines by ron kurtus revised 26 july 2016 a lever is a simple machine that allows you to gain a mechanical advantage in moving an object or in applying a force to an object it is considered a pure simple machine because friction is usually so small that it is not considered a factor to overcome as in other simple machines. Clever poignant and unexpectedly funny schneiders a simple machine like the lever masterfully evokes the simple pleasures and harsh realities of keeping to ones ideals in a world where speed is revered and complexity is king david rozgonyi author of goat trees tales from the other side . Humans have invented six devices that combine to make work easier these six simple machines are the wheel and axle the lever the inclined plane the pulley the screw and the wedge
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