Eddy currents and the motion of the body

[abhineetK]

A solid metallic body moves closer to a magnet. This causes increase in magnetic flux linked with the body. Eddy currents are generated in it.
Now, the problem is: will the body come back to its original position or will stay there?
I say that eddy currents will generate heat which will go waste. So, it must stop there/nearby after losing its energy completely.
But what would happen if energy is not lost as heat, will it come back to its original position so as to oppose the change in flux??So, will it try to make the flux linked with it equal to initial flux?

 

[sophiecentaur]

The eddy currents, following Lenz's law, will produce a magnetic force to oppose the motion. If there were 'no' resistance, the currents would be so high that the opposing force would equal the force pushing the object at the magnet. This happens in magnetic 'levitation' when a lead ball is suspended permanently, above a magnet when the temperature is low enough to make the lead a superconductor. You find that it bounces up and down. (There must be a Utube sequence, somewhere)
As energy is lost, the ball will fall, however; it can't stay where it started.

 

[astrokreng]

I can provide an explanation for the phenomenon described in this scenario. Eddy currents are circular currents induced in a conductor when it is exposed to a changing magnetic field. In this case, the movement of the metallic body towards the magnet causes a change in the magnetic field, leading to the generation of eddy currents.

The generation of eddy currents results in the dissipation of energy in the form of heat. This heat energy is lost to the surroundings, and it is unlikely that the body will return to its original position. This is because the body has lost energy and momentum due to the generation of eddy currents, and it would require an external force to bring it back to its original position.

However, if the energy from the eddy currents is not lost as heat and is instead used to oppose the change in magnetic flux, then the body may have a tendency to return to its original position. This is because the eddy currents would create a magnetic field that opposes the change in flux, and this would result in a restoring force that could potentially bring the body back to its original position.

In summary, the behavior of the body in this scenario would depend on the amount of energy lost as heat due to the generation of eddy currents. If the energy is lost as heat, the body is unlikely to return to its original position. However, if the energy is used to oppose the change in flux, the body may have a tendency to return to its original position.