KnowraWheelWheelA circular component that rotates around an axle to enable movement, transmit force, or guide a vehicle.BriefConnectAxle: A rod or shaft on which a wheel rotates or that rotates with it. It supports the wheel and defines the axis around which the wheel turns.Potter's wheel: A rotating platform used to shape clay into pottery. The earliest known wheel uses include pottery-making, not transport.Waterwheel: A wheel turned by flowing or falling water to perform mechanical work. It converts a water source’s motion into power for mills and other machines.Chariot: A light, horse-drawn vehicle with two wheels, used especially in ancient warfare and ceremony. The spoked wheel made fast, lightweight vehicles such as chariots practical.Rolling resistance: The force opposing motion when a body rolls over a surface. It explains why wheels lose energy and why tire and surface design matter.Bronocice pot: A late fourth-millennium BCE vessel bearing one of the earliest known depictions of a wheeled vehicle. Its incised image is evidence for early wheeled transport in Europe.Flywheel: A rotating mass that stores energy as angular momentum and smooths changes in a machine’s speed. It uses rotational inertia to stabilize machinery rather than move a vehicle.Wagon: A four-wheeled vehicle designed to carry goods or people, usually pulled by animals. Wagons show how wheels expanded the amount of cargo people could move over land.Traction: The frictional grip that enables a surface to transmit force without slipping. A wheel can propel or steer a vehicle only when its contact with the ground provides grip.Uruk period: A period of urban growth in southern Mesopotamia, roughly 4000–3100 BCE. Early depictions of wheeled vehicles appear in the archaeological record of this era.Show all 21Linked from 9 pagesCentral angleBroader topic: A wheel's rotation can be described by the central angle swept by a radius.Lunar roverRelated: Lunar rover wheels must cross loose soil and rocks without ordinary pneumatic tires.TireNarrower topic: A tire mounts on the wheel, which supports it and transfers its forces to the vehicle.Terrestrial locomotionCompared with: Wheels can move efficiently on suitable ground but do not use articulated limbs.All-terrain vehicleBroader topic: Wheels transmit an ATV’s motion to the ground and support its weight.Horse-drawn vehicleRelated: Wheels reduce friction as a loaded vehicle travels over a road.Arthur HaileyBroader topic: Hailey applied his industrial research to a car company facing labor and market pressures.Show all 9