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| Young relative uses beast of burden, a close to obsolete mode of transportaion, to carry him up a mountain. It is a law of nature to always take the lowest energy path, and this boy is doing just that. | Windmills convert kinetic energy from atmospheric air into mechanical energy to do work. They are an example of something that converts energy from one form to another. Young relative raving over these simple inventions that have been around for centuries and are still being used, in many parts of the world, to harness energy from the air we breathe. |
