Specifications

220
Notice that the muscle forces are illustrated by the bulging of the muscles. In the ChartFx view near the top
of the tree you can find the MaxMuscleActivity. It expresses the load on the body in percent of its strength.
Plotting this property in the ChartFx View gives you the following result:
Obviously holding the leg out in the air like that without the support of a pedal spring and holding up the
weight of the pedal as well is rather strenuous and in fact requires about 44% of the body's strength.
Now, let us study the effect of spring stifness. We initially try: