Force on magnet in magnetic field

AI Thread Summary
The discussion centers on calculating the force acting on a magnet in a magnetic field, referencing a specific post on Physics Stack Exchange. The interaction energy formula is crucial for determining this force, which involves taking the gradient of the potential energy function. Participants discuss the need for a volume integral to find the interaction and clarify that B represents the overall flux density. Additionally, the conversation touches on the omission of torque in the initial formula and the complexities of applying these principles to magnets within a solenoid's magnetic field. Understanding these concepts is essential for accurate calculations in magnetism.
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They work out the force from the potential energy function.
 
so i just have to take the potential energiy fuction, and get the volume integral for the interaction and so the force?
 
then for calculating i fill in the formulas ? and well, is B the allover flux density?
 
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The force is usually the gradient of the potential energy function ... the integral was to find the function... so yeah, basically. It looks odd because magnets are annoying.
The formula does not cover torques... you will have to take account of the freedoms in the physical system you are concerned with as well.
 
How can i get the torque in? and, well, does it apply for magnets in the magnetic field of a solenoid? (inside)
 
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Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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