Table of Mechanics Demonstration  List of Mechanics Equipment &
Supplies  Lecture Demonstrations  Galileo Lever, 1J40.45  Topic
and Concept:     An apparatus shows the conditions for static
equilibrium. Two sections of ruler of different lengths are
connected to a larger ruler of length equal to the sum of the
smaller two. The smaller two are bolted to the large piece so
that they may be rotated. The small piece is bolted at its
center of gravity. The larger one is not so rotating it results
in a net torque.    ID Number  Galileo Lever  ME, Bay A6, Shelf
#1  Important Setup Notes:  Setup and Procedure:    1. Place
weighted stand on table with a 1/4" rod secured in a horizontal
position as shown in picture above.   2. Hang the apparatus from
the rod.   3. Try various positions of the bolted rods, and
observe the changes in the equilibrium positions of the
apparatus.  Cautions, Warnings, or Safety Concerns:   This
demonstration shows the static torque equation in action. The
torques on the main ruler are due to