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Strength of magnetic Field

by Neutrino98
Tags: field, magnetic, strength
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Neutrino98
#1
Feb22-13, 11:55 PM
P: 10
How strong must the magnetic field be to attract an magnetic item from 1 meter plus?
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cwilkins
#2
Feb23-13, 04:08 AM
P: 25
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.
Dr_Morbius
#3
Feb23-13, 07:37 PM
P: 155
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.


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