How Strong Must a Magnetic Field Be to Attract a Magnetic Item from 1 Meter?

[Neutrino98]

How strong must the magnetic field be to attract an magnetic item from 1 meter plus?

 

[cwilkins]

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]

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.