Force on magnet in magnetic field

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Discussion Overview

The discussion revolves around calculating the force acting on a magnet placed in a magnetic field, with a focus on the potential energy function and its relation to force and torque. Participants explore the mathematical formulation and implications of these concepts.

Discussion Character

  • Exploratory, Technical explanation, Mathematical reasoning

Main Points Raised

  • One participant references a post discussing the interaction energy related to the force on a magnet in a magnetic field.
  • Another participant suggests that the force can be derived from the potential energy function.
  • A question is raised about obtaining the volume integral for the interaction to calculate the force.
  • There is a query regarding whether the magnetic flux density (B) is considered the overall flux density in the calculations.
  • One participant notes that the force is typically the gradient of the potential energy function and mentions that the integral is used to find this function, highlighting the complexity of working with magnets.
  • A later reply inquires about incorporating torque into the calculations and whether the discussed principles apply to magnets within the magnetic field of a solenoid.

Areas of Agreement / Disagreement

Participants express varying levels of understanding regarding the relationship between potential energy, force, and torque, with no consensus reached on the specifics of the calculations or the application to different scenarios.

Contextual Notes

Participants have not fully resolved the mathematical steps involved in deriving the force and torque, and there are assumptions about the definitions of terms like potential energy and magnetic flux density that remain unclarified.

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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?
 
Last edited:
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)
 
Last edited:

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