Hooke's Law of Elasticity

Hooke's Law of Elasticity states that the force needed to stretch or compress a spring (or elastic material) is directly proportional to how much it is stretched or compressed, as long as the limit of elasticity is not exceeded. Mathematically, it’s expressed as F = kx, where F is the force applied, x is the displacement from the original length, and k is a constant that depends on the material’s stiffness. In simple terms, the more you pull or squeeze, the more force it takes, and the material returns to its original shape once the force is removed, within its elastic limit.