Simple Harmonic Motion - Mass on a Spring

Simple Harmonic Motion as displayed through the motion of a mass oscillating on a spring. Assuming ideal conditions of perfect elasticity and no friction or air resistance, the mass would continue to move up and down in a uniform and regular manner.
Before tinkering with the Geogebra features, study the image and speculate on what each of the sliders represents. Adjust each slider to see if you speculated correctly. Click the Start button and envision what the graph would look like for the vertical position of mass M as a function of time. Click on the "graph" toggle and compare to what you expected.