|This classic device is used to demonstrate the conservation of
mechanical energy and its conversion from one form to another.
After the wheel is rotated by hand to roll the supporting cords to
the top and then released, its potential energy turns into kinetic
energy of rotation as it falls. After the wheel reaches its bottom
position, the kinetic energy changes back to potential energy as
it rolls the cords up again. This process continues until all the
energy is lost to friction. All metal construction.
Includes an activity guide.
Dimensions: 12.5" x 5.5" x 18".