Physics & Astronomy

Transferring Angular Momentum

Purpose
To show that a student can be made to rotate by �giving� him/her some angular momentum
Location
Room 136, on the stainless steel cart shelves V1 & V3 (Caution: Platform is heavy.)
Description
Get the bicycle wheel spinning then give it to a student standing on the rotational platform (left photo). He can then extract some angular momentum by rotating the axis of the wheel 180� so it is spinning in the opposite direction (right photo). Conservation of angular momentum requires that he begin rotating. CAUTION: Not too fast, and stop before the student gets dizzy.
(Also see Rotating Platform and Wheel demo.)