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Simple machines form the basis of complex technologies from "summary" of How Technology Works by DK
At the heart of the most sophisticated technologies lie simple machines that perform basic functions. These simple machines are the building blocks upon which complex technologies are constructed. They may seem uncomplicated on their own, but when combined and integrated in clever ways, they can achieve remarkable feats. One example of this concept is the lever, a basic machine that has been used for centuries. A lever consists of a rigid beam or bar that pivots on a fulcrum. By applying force to one end of the lever, a person can lift heavy objects with relative ease. This simple principle is at work in everything from seesaws on playgrounds to hydraulic lifts in car repair shops. Another example of a simple machine with far-reaching implications is the wheel and axle. This fundamental inv...
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