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Posted

I am trying to find how much force is generated when a cooled super conductor is hovering above a magnetic field.

So let' s say 250 gram superconductor will have hoe many lift force  whren it is hovering

?

Or does the electric magnetic field on wich ot is hovering  provides the lift force?

Posted
33 minutes ago, Downlord4spaceflight said:

I am trying to find how much force is generated when a cooled super conductor is hovering above a magnetic field.

So let' s say 250 gram superconductor will have hoe many lift force  whren it is hovering

?

Or does the electric magnetic field on wich ot is hovering  provides the lift force?

Oh, this is about the Meissner Effect, isn't it? https://sciencenotes.org/meissner-effect-in-superconductors/

Generally it is easier to have the superconductor below, so you can arrange more easily for the cooling, and then put the magnet on top to levitate. But if you can find a way to engineer a free-floating superconductor on top of a magnet, then the effect will be the same.

As for the magnitude of the force generated, I would expect that to depend on the the strength of the magnetic field and hence the distance by which the upper component is levitated, the force being stronger at smaller separation, where the magnetic field is more intense. However, being only a chemist by training, I don't know enough of the physics to do a quantitative calculation. I expect a physicist may arrive in due course and may be able to help further.

Posted (edited)
59 minutes ago, Downlord4spaceflight said:

I am trying to find how much force is generated when a cooled super conductor is hovering above a magnetic field.

Better question than your first version.

Note @exchemist excellent reply that the superconductor is on the ground since you require all that extra apparatus to generate and maintain superconducting. +1

 

The  answer to your question comes directly from school mechanics 101.

The upward force on the hovering object equals the downward force on the apparatus equals the weight of the hovering object.

This must be so by the definition of hovering.

Edited by studiot
Posted
25 minutes ago, studiot said:

Better question than your first version.

Note @exchemist excellent reply that the superconductor is on the ground since you require all that extra apparatus to generate and maintain superconducting. +1

 

The  answer to your question comes directly from school mechanics 101.

The upward force on the hovering object equals the downward force on the apparatus equals the weight of the hovering object.

This must be so by the definition of hovering.

Good point. I suppose the issue is rather what the force is, at a given separation, for a given field strength.

Posted

I'm trying to understand the question. Is this a correct interpretation @Downlord4spaceflight?
"When we cool a superconductor and place it above a magnet, it can float or hover because of special magnetic effects. If we start adding some non-magnetic weight to this floating superconductor, how much extra weight can it hold before it stops levitating? Essentially, what is the maximum additional mass the levitating superconductor can support while still staying afloat above the magnet?"

 

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