In other words, a large steering wheel helps a sailor to turnĪ ship's rudder more easily than a small wheel. If you turn the outside of a wheel like this, the axleĪt the center turns more slowly but with more force. (as we explain below), but they also work as levers. Photo: Ship's wheel: Wheels help vehicles to move along by transferring and reducing friction The rise of the wheel, from a basic turntable that helped people moldĬlay pots to a key component in hundreds of important inventions, owesĮverything to the simple and effective way it helps us capture and Six thousand years ago, there weren't any wheels atĪll. Today-in very obvious places (on cars, trucks, and airplanes), but also hidden inside everything fromĬomputer hard-drives and clothes washers to
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