K K Koo: Class of 2000
Graphs can be plotted by forcing a mass attached to a force probe with a rubber band up and down at varying speeds by hand. (The motion detector is placed on the floor below the shield.) Preliminary measurements with a rubber band show that the areas of the hysteresis loops are almost identical, independent of the period of the cycle.
It would be interesting to investigate the truth of this statement for several types of rubber.