Why is perpetual motion impossible? For example, can’t you just redirect some of the energy produced from a generator into keeping itself running?
In: Physics
There are engines and mechanisms that automatically reset themselves and then go again. For example, your car has revolving parts. Hooked up to a fuel supply, your car could run forever. Let’s even say we could even turn the exhaust into fuel and recirculate it. Even still there are two problems.
First is energy loss. Noise, light, sounds, heat, movement, etc are all examples of energy leaving the system. Therefore, eventually the engine would run out of fuel because energy is constantly being lost in the previously listed forms.
Second, parts break down and need replacing. Engines need maintenance. So on and so forth.
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