A wheel is a circular object that, together with an axle, allows low friction in motion by rolling. Common examples are found in transport applications. More generally the term is also used for circular objects rotating for other purposes, such as a wheel and axle and a flywheel. Wheel - Mechanics. Wheels are used in conjunction with an axle, either the wheel turns on the axle or the wheel is rigidly attached to the axle which then turns in bearings in the body of the vehicle. The mechanics are the same in ...

Including:

• Wheel - Mechanics
• Wheel - History of the wheel
• Wheel - Wheeled vehicles
• Wheel - Alternative options to wheels

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The wheel is regarded as one of the oldest and most important inventions, which is, according to most authorities, originated in ancient Mesopotamia in the 5th millennium BC, originally in the function of potter's wheels. The wheel reached India with the Indus Valley Civilization in the 3rd millennium. In China, the wheel is certainly present with the adoption of the chariot in ca. 1200 BC, and Barbieri-Low (2000) argues for earlier Ch ...

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Wheel, Wheel - Mechanics, Wheel - History of the wheel, Wheel - Wheeled vehicles, Wheel - Alternative options to wheels

Read more here: » Wheel: Encyclopedia II - Wheel - History of the wheel

Wheels are used in conjunction with an axle, either the wheel turns on the axle or the wheel is rigidly attached to the axle which then turns in bearings in the body of the vehicle. The mechanics are the same in either case. The low density of friction (compared to dragging) is explained as follows: the sliding distance is reduced, because the sliding takes place between the wheels and the axles or between the axles and the bearings the coefficient of kinetic friction μ for ...

See also:

Wheel, Wheel - Mechanics, Wheel - History of the wheel, Wheel - Wheeled vehicles, Wheel - Alternative options to wheels

Read more here: » Wheel: Encyclopedia II - Wheel - Mechanics