
Springs are mechanical devices and fundamental mechanical components which form the basis of many mechanical systems. A spring can be defined to be an elastic member, which exerts a resisting force when its shape is changed. It are commonly made from tensioned steel, used to exert pressure or tension, resist tension, or retract after tension is applied. Springs can be flat or coiled. Compression springs are one common type of springs and widely used in the daily application. It is wound or coiled to oppose or absorb compression along their length. Compression springs can be wound in constant or variable pitch. Compression springs can be straight, conical or have variable diameters through their length.
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