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"

Description:
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.)

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