Editing Wheel (section)

{{Short description|Circular component rotating on an axle}}
{{other uses|Wheel (disambiguation)|Wheels (disambiguation)}}
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{{Use dmy dates|date=September 2020}}
[[File:Landesmuseum Württemberg Kelten 011.4.jpg|thumb|Spoked wheel of reconstructed Celtic funerary wagon, 550 BC, [[Hochdorf Chieftain's Grave]], Germany]]
A '''wheel''' is a rotating component (typically circular in shape) that is intended to turn on an [[axle]] [[Bearing (mechanical)|bearing]]. The wheel is one of the key components of the [[wheel and axle]] which is one of the [[Simple machine|six simple machines]]. Wheels, in conjunction with axles, allow heavy objects to be moved easily facilitating movement or transportation while supporting a load, or performing labor in machines. Wheels are also used for other purposes, such as a [[ship's wheel]], [[steering wheel]], [[potter's wheel]], and [[flywheel]].

Common examples can be found in [[transport]] applications. A wheel reduces [[friction]] by facilitating motion by [[rolling]] together with the use of [[axle]]s. In order for wheels to rotate, a [[Moment (physics)|moment]] needs to be applied to the wheel about its axis, either by way of gravity or by the application of another external force or [[torque]].