Awhile back, I was learning about springs, and restoring/distorting force. We even did an experiment where we hung a spring and put weights on it and pulling it down, watching it oscillate. From this, I assumed the distorting force was the force that stretched the spring and restoring force is the force that restores the spring to equilibrium. I remember someone mentioning that the distorting force and restoring force are equal, however I can't quite understand why they would be equal unless the spring is not stretched. Here's my idea: If the spring is stretching, the distorting force>restoring force and when the spring is returning to its equilibrium position distorting force<restoring force and finally when the spring is not moving .<<----Are these assumptions correct?? My other question is why does the restoring force = spring constant of the spring?? What role does the spring constant have in restoring the spring back to equilibrium? Is the restoring force an actual force acting on the spring? Thanks.