Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Strength of magnetic Field

  1. Feb 22, 2013 #1
    How strong must the magnetic field be to attract an magnetic item from 1 meter plus?
     
  2. jcsd
  3. Feb 23, 2013 #2
    To answer that question I believe you would have to know at least the mass, magnetic susceptibility, magnetization, and possibly the magnetic hysterisis of the object you're trying to move. For an approximate answer I believe you would at least need to know what kind of material it is, whether it is "saturated," its volume, and its mass.
     
    Last edited: Feb 23, 2013
  4. Feb 23, 2013 #3
    A magnetic field of any strength will attract any magnetic object as long as the forces that prevent the object from moving are low enough. On a kitchen table a small magnet may not move a magnetic object 1 meter away but in zero gravity and a vacuum it should slowly pull the object to the magnet.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Strength of magnetic Field
Loading...