Why a perpetual magnet engines do not work?

Question

A sample of this motor:

[https://www.youtube.com/watch?v=LXBYMiNH1nE](https://www.youtube.com/watch?v=LXBYMiNH1nE)

In: 87

Answer 1

What if we don’t need a perpetual motion machine but one that lasts 50 years and then reset it again for another 50 years