Magnetic force on ferromagnetic body

[sorena_2006_1]

Hello
when we study electromagnetic ,it is easy to find force of a magnetic field on particle witch has electric charge (for example electron and ...) but what is force of magnetic field on ferromagnetic materials? for example if we put a cube of soft iron with a*a*a dimentions near a magnetic field B or H what is the force witch attract it?

 

[Meir Achuz]

The force depends on many things, so there is no simple formula.
The force depends on the magnetic properties of the object, its dimensions and orientation, and the spatial dependence of the B field.
There will generally be no force for a uniform B field.
A cube is a difficult shape calculate the force on.

 

[sorena_2006_1]

Thank you dear Meir Achuz
material is magnetostrictive and objected to a uniform (respect to x direction) magnetic field.

 

[Meir Achuz]

I don't think there will be any net force in a uniform magnetic field.