Hooke’s Law States that:
The Extension of an Elastic Object is Directly Proportional to the Force Applied, up to the Limit of Proportionality.
What is the ‘Limit of Proportionality’?
The Point where if more Force is Added, the Object may Extend, but will not Return to its Original Shape when the Force is Removed. It will be Inelastically Deformed.
Force = …
Spring Constant * Extension
Extension of a Spring = …
Final Length - Original Length