(I list this as Advanced because the question is not what it seems from the title.) So most know the cases: no damping, underdamping, critical damping, overdamping. I got that: this is not a request for explanation. Rather... Does anyone know of a web page that has some tutorial ANIMATION such that, for specified initial conditions,one could use a slider for the parameters (two of, say, mass, stiffness, damping, normalized) and observed the response "morphing/deforming/whatever" from one case to another?