An angular momentum vector diagram shows the angular momentum of each object in a system at some initial and later time. Typically, you should also include the system’s total angular momentum and any changes in angular momentum.
A physics professor is sitting at rest on a stool that can rotate freely, holding a bicycle wheel that is spinning counterclockwise when viewed from above. For each of the experiments described below, predict which direction, if either, you expect the professor to be rotating at the end of the experiment (when viewed from above). Explain your thinking in each case.
Experiment 3: the professor flips the bicycle wheel over once, then quickly flips it back, so it is still rotating counterclockwise when viewed from above.
