
Mechanics/Dynamics/Motion

Square Wheel
In SQUARE
WHEEL, a teninch square wheel rolls smoothly across a very bumpy
surface. The bumps are carefully designed, flat catenary curves
which exactly match the sides of the wheel in length. These curves
also exactly compensate for the changing axle height of the square
wheel as it rolls along. The axle of the wheel does not move up
and down. Extensive graphics explain the exhibit.


