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Wheel The Mesopotamians are credited with the invention of the wheel. The wheel was a revolution as it allowed larger loads to be moved a greater distance.
- The linear velocity of the axle as a function of rotational frequency is:
 - where
- v = linear velocity of the axle [ms-1]
- a = wheel radius [m]
- f = wheel rotational frequency [Hz]
- ω = wheel angular velocity [rad s-1]
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Historical Notes: - 3200BC Wheeled vehicles are used in Uruk.
See also: Axle, Suspension, Tyre, Wheelbase.
  
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