hooke's law

• • Hooke's Law describes how extension happen when object increases in length, and compression happens when it decreases in length
• the formula is f = ke
• • spring constant is measure of stiffness of spring up to limit of proportionality
  • limit of proportionality refers to beyond which Hooke's Law is not true
  • higher spring constant, stiffer spring
  • extension proportional to force for spring
  • until limit of proportionality exceeded
• • elastic limit is furthest point it can be stretched whle being able to return to previous shape
  • once material past elastic limit, deformation said to be inelastic
  • force and extension becomes non-linear
  • shown in materials like clay or putty