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.

 

[sardar]

The force on a ferromagnetic material in a magnetic field is dependent on its magnetic properties and the strength of the magnetic field. Ferromagnetic materials are characterized by their ability to become magnetized in the presence of an external magnetic field. This means that the material will align its magnetic domains with the direction of the magnetic field, creating a net magnetic moment.

The force on a ferromagnetic material in a magnetic field is due to the interaction between the magnetic field and the magnetic moment of the material. This force is known as the magnetic force and is given by the equation F = m x B, where F is the force, m is the magnetic moment, and B is the magnetic field.

In the case of a cube of soft iron, the force would depend on the orientation of the magnetic domains within the material and the direction of the external magnetic field. If the magnetic domains are aligned with the external magnetic field, the force will be stronger and will attract the cube towards the magnetic field. If the magnetic domains are not aligned, the force will be weaker or even repulsive.

It is important to note that the force on a ferromagnetic material is not only dependent on the strength of the magnetic field, but also on the material's magnetic properties such as its permeability and susceptibility. These properties can affect the strength of the magnetic moment and therefore the force on the material.

In conclusion, the force on a ferromagnetic material in a magnetic field is a result of the interaction between the material's magnetic moment and the external magnetic field. The strength of this force will vary depending on the material's magnetic properties and the strength and orientation of the magnetic field.