Any string that can stretch and come back to its original length can be considered a spring. Each spring has a constant elasticity (stiffness) that depends on its material. As shown in the veer experiment diagram below, elastic forces of the springs appear at the ends of the springs, and material effect on the contact or association with it as it is deformed. The direction of elastic force counters the direction of the external force, causing deformation. EdrawMax Online comes with mechanical physics symbols, allowing you to create similar-looking diagrams for your projects easily.
