Attraction and repulsion between two magnets

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SUMMARY

The discussion focuses on calculating the force of attraction or repulsion between two cylindrical magnets of varying sizes and strengths, specifically when they are not parallel. Key factors include the dimensions (length L and radius r), relative permeability (k), and the magnetic moment of the magnets. The conversation highlights the complexity of the calculation, emphasizing the need for specific measurements and orientations to derive accurate results.

PREREQUISITES
  • Understanding of magnetic properties, including magnetic moment
  • Knowledge of cylindrical magnet dimensions (length and radius)
  • Familiarity with relative permeability in magnetism
  • Basic principles of magnetic force calculations, including inverse square law
NEXT STEPS
  • Research the formula for calculating magnetic force between non-parallel magnets
  • Explore the concept of magnetic moment and its impact on force calculations
  • Learn about the role of relative permeability in magnet interactions
  • Investigate modeling magnets as monopoles for simplified calculations
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Physics students, engineers, and hobbyists interested in magnetism, particularly those looking to understand the dynamics of magnet interactions in various orientations and configurations.

kalesh
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Hi,
I hope this is the correct place to ask this.
Does anyone know of a formula to calculate the force of attraction or repulsion between two magnets of diffirent sizes and strengths?
Also the magnets are not parallel to each other.
Any help highly appreciated.
 
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It depends on the specific dimensions, locations and orientation of the magnets.
Give some specifics.
 
Cross-linking from https://www.physicsforums.com/showthread.php?t=484015

Meir Achuz said:
It depends on the specific dimensions, locations and orientation of the magnets.
Give some specifics.

Hmmm, okay. Let's say you have two cylindrical magnets of length, L, radius, r, relative permeability k. What else do you need to know? Would you need to know how many Tesla are measured at different distances from the material? Would it help to know the magnetic "moment" of the magnets? Can you model it as though the magnets each consisted of two "monopoles," each subject to an Force = inverse square distance law?

There is info about the torque all over the place, but its hard to find anything about the attraction and repulsion of magnets.
 

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