it becomes hot due to friction
Due to friction
a axel
The Falkirk Wheel is the only rotating boatlift in the world.
It is the center shaft of a rotating wheel or gear.
Not really. The only design that can appear from a painted pattern rotating at speed is concentric circles.
It's a large rotating wheel structure - a Ferris wheel.
A cam
The Riesenrad or prototype Wonder Wheel , circa l897, a few years after Chicago"s and of the heavily constructed type. actually the word Riesenrad means Giant Wheel. Wunderad would be Wonder Wheel. Coney Island Wonder Wheel went up in l920. Prime contractor for Wonder Wheel ( Coney) and Chicago Ferris wheel was- Bethlehem Steel.
a flywheel
No. Wheel bearings can only be tested by shaking and rotating the wheel.
The WONDER WHEEL was initially called the "Dip-the-Dip" by its inventor. He promised to combine the thrill of a scenic railway, Ferris wheel and Chute-the-Chutes.
There are lots of device that rotate; one of them is a wheel.
Water wheel .