Introduction to Hooke's Law
Hooke's law is a basic law in the theory of mechanical elasticity, which is expressed as follows: After the solid material is stressed, the relationship between the stress and the strain (unit deformation) in the material is linear. Materials that meet Hooke's Law are called linear elastic or Hookean materials.
From a physical point of view, Hooke's law stems from the fact that atoms inside most solid (or isolated molecules) are in a stable equilibrium without external loads.
Many practical materials, such as a prismatic rod of length L and cross-sectional area A, can be simulated mechanically by Hooke's law—the unit elongation (or reduction) (strain) is in the constant coefficient E (called In the elastic modulus, it is proportional to the tensile (or compressive) stress σ, ie: F=-k·x or △F=-k·Δx
Where is the total elongation (or reduction) amount. Hooke's Law is named after the 17th century British physicist Robert Hook. Hook’s process of proposing the law is quite interesting. He published a Latin riddle in 1676 with the mystery: ceiiinosssttuv. Two years later, he unveiled the answer: ut tensio sic vis, which means "force is like elongation (like change)", which is the central content of Hooke's law.