Windmill

Working model of windmill is a common science project. A windmill is a mill that converts the energy of wind into rotational energy by means of vanes called sails or blades.

Fact:
Windmills are good examples of wheel-and-axle machines. The wheel is able to rotate freely on an axis, harnessing the wind’s energy to move it by having sails, or shapes that can catch the wind

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