I mean, I always used to fancy as a kid why can’t we use magnets to keep a fan going in circles? Why can”t we create a perpetual machine using magnets? Even if the magnets get worn out, we can still use them for considerable time. What is the science behind it that makes it impossible?
In: Engineering
The magnet attracts (or repels) all the fan blades at once so the fan will not spin. You can test this by yourself. Get a fan, make a hole in the tip of each blade. Tie a piece of string to each hole. Pull all the strings at the same time and see what happens. It may rotate a bit but it will immediately get into an equilibrium point and stall
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