If the spring can change suddenly, it means that there is displacement in the limit time, X / T = V (time limit), and the pushing speed is infinite (but the speed cannot be infinite) But if one end of the spring is not connected with a mass object, the deformation of the light spring does not need time, can the elastic force change suddenly?

If the spring can change suddenly, it means that there is displacement in the limit time, X / T = V (time limit), and the pushing speed is infinite (but the speed cannot be infinite) But if one end of the spring is not connected with a mass object, the deformation of the light spring does not need time, can the elastic force change suddenly?

At this time, X is the difference value, which should be v = (x2-x1) / T. when the displacement is negative and the velocity is positive, there is x2 & lt; x1, then there is x2-x1 & gt; 0. When the velocity is positive, the direction of displacement is positive and negative is self-determined, and the spring oscillator is stable