wooden discs with identical mass, shape, and size are loaded with lead so that
they have different moments of inertia about their axes of symmetry. When
the discs are rolled down an inclined plane, the disc with the smaller moment
of inertia always wins the race down the plane.
loaded to have different moments of inertia.
The discs are released from the same position on the inclined plane. The disc
with the smaller moment of inertia "wins" the race and hits the foam
bumper on the edge of the lecture bench first. Be sure that when the discs are
released, the two are not touching eachother. The friction between the two discs
will change the motion.
discs. The front disc is obviously winning; it has a smaller moment of inertia.
approaching the bumper.
This page was last updated on
Friday August 15, 2008 8:37 PM