60Hz is fed to the coil, and the elasticity and mass of the steel plate correspond to its mechanical resonance in this freequency?
Well, where does the increase in mechanical vibration energy come from when a permanent magnet approaches?
I still don't understand your opinion ...

Quotebecause you stated that you couldn't replicate the effect,

I had it with a vibration transducer, I showed it ...

The electromagnet coil is generating the oscillation. The magnets cause the electrical elements inside the coil to react to the lopsided fields somehow. Nothing happens if the power is disconnected. I really can't answer your question because I am not sure what's going on myself.

Below is the schematic from Lidmotor for the position of the reverse biased light emitting diode (LED). The florescent bulb is illuminated by the same circuit.

The attraction strength from that 1'1/2 neo sphere would crush your hand against a refrigerator. You can see from this angle how the magnetic reed switch is canted to deliver the correct firing position. The weaker Lenz reverse pulse needs to fire at TDC. The power pulse needs to fire off center to center the spinner.

This Alien "Crop Circle" is a symmetrical bipolar depiction of the Lenz Propulsion. Look closely and two smaller circles of different sizes appear that represent the power difference between the primary input pulse and the backspike and the position of TDC.

Joe Newman patented a motor that had 2 coils that created a timing issue and monsterous commutator. The crop circle solves it. One coil eliminates that problem. Pumping water with the rotor and recycling backspike from a "Big Eureka" Coil would work even better than Joe's design. The Crop Circle clearly shows TDC at the backspike! That is Free Power! The adjacency of TDC amplifies the BEMF!