Northwestern Physics Demos                                 Go back to Mechanics
DCS# 1Q40.10NWU# M-23
title: Conservation of angular momentum
aka: rotating stool with masses  or "3 dumbells"

Stool will allow student to rotate.  By moving masses closer to axis of rotation, the angular velocity increases.
Note: Comes with air sickness bag (just in case.)

  Does the kinetic energy increase when the spin increases?  If so, where did the work come from?
photo of stoolpix of barf bag