Ok, well I've been thinking up of a new invention.
It has to deal with a magnet and a sideways ferris wheel.
I've pieced this together with some help of a friend, and realized that you could build a circle of magnets that try to attract each other. If you take the outer ring of a ferris wheel apart and attach each spoke with a strong magnet, a magnet on a spoke would try to attract the magnet on the spoke in front of it. Since the magnets are not touching each other, this circle of motion should probably go on forever and could power a motor.
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