why can’t we use magnets for perpetual motion?

Question

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

Answer 1

I’m going to go back further than magnets.

We can’t use ***anything*** for perpetual motion, as it breaks the laws of thermodynamics.

And ***nothing*** can break the laws of thermodynamics.