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Magnetic permeability

  1. Sep 1, 2011 #1
    Does a material's magnetic permeability affect how much of said material a magnet can lift?

    For example, say a magnet can lift 1 unit of weight of a material with a permeability of 2. If another material has a permeability of 4, could the same magnet instead lift 2 units of weight of this other material?

    Or, does magnetic permeability only relate to the creation of electromagnets?
  2. jcsd
  3. Sep 1, 2011 #2


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    The force exerted by a magnet is proportional to (mu-1)/(mu+1) if mu is a constant
    (independent of B).
  4. Sep 1, 2011 #3
    I don't think that permeability is necessarily related to weight.

    Having said that, it is true that of two materials of same density, a magnet would lift more weight of the one with higher permeability.

    In other words, permeability is a measure of the friendliness of a material to magnetic lines...the ability to channel more and more magnetic lines through itself...and hence, the magnetic force between itself and a magnet would be proportional to the amount of linked magnetic lines.
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