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
It’s just not possible.
Essentially:
The electricity produced by the system is being sent, or used by something. That means that energy is losing the system.
Without energy being constantly reintroduced into the system, it will run out.
It may not be fast, but it will eventually run out. Either by a magnet or battery slowly losing charge, or heat destroying the materials, or momentum being lost. Eventually, whatever is “creating” the enegy will lose out to friction, or time, or loss of mass.
There are, however, long lasting means of producing energy that are near-endless, like solar power, the waves up and down oscillation motion in the seas, ocean currents, etc. that can be harnessed, but it’s not a perpetual closed system in the way a perpetual motion machine is envisioned.
Even if you found a way to use the rotation of the earth to spin a gear, eventually the earth would stop spinning from loss of kinetic energy, however long it took (billions or trillions of years)
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