A spring is a device consisting of an elastic but largely rigid material (typically metal) bent or molded into a form (especially a coil) that can return into shape after being compressed or extended. Springs can store energy when … 展开

Hooke's law
An ideal spring acts in accordance with Hooke's law, which states that the force with which the spring pushes back is linearly proportional to the … 展开

Zero-length spring is a term for a specially designed coil spring that would exert zero force if it had zero length. That is, in a line graph of the spring's force versus its length, the line passes … 展开

Simple non-coiled springs have been used throughout human history, e.g. the bow (and arrow). In the Bronze Age more sophisticated spring devices were used, as shown by the spread of 展开

Classification
Springs can be classified depending on how the load force is applied to them:
Tension/extension spring The spring is designed to operate with a tension load, so the spring stretches as the load is applied to it. … 展开

In classical physics, a spring can be seen as a device that stores potential energy, specifically elastic potential energy, by straining the bonds … 展开

• Airsoft gun
• Aerospace
• Retractable ballpoint pens
• Buckling spring keyboards
• Clockwork clocks, … 展开