Mechanics > Rotational Dynamics > Conservation of
Angular Momentum
DCS# 1Q40.20
VARIABLE MOMENT OF
INERTIA ROTATOR
APPARATUS
variable moment of inertia
rotator
202-15-D
DESCRIPTION
Two equal masses are free to slide
along a rotating horizontal bar. A cord connecting the masses
passes down through the center of the rotating bar and is connected to
a swivel. Pull the cord to decrease the rotational inertia of the
system and the angular speed will increase.
