Magnetic Force Acting on a Ferromagnetic Material

i have used F = B²A/2μ_{0 .. A being the surface area of the magnet face... quite reliable.}

<sigh>

Enlighten your mind.

I think the formula above is not true since the materials permeability must be used in any formula, so the constant here doesnt seem to be true. Also the link enlighten your mind is a general info page and I think the extraction needed to clear our minds is not so easy. I am asking about a "material " not any current or electrical charge. Do you see what I mean?

Perhaps i am not able to understand your question ... still .. here is an extract from a webpage ...

so how can it be that a magnet exerts the same force on every material? I think permeability must be taken into account. İsnt it?

Never thought about it ! Maybe the B will be higher with ferromagnetic materials?

This is an interesting post, thanks.

Yes it is true. this formula contains what I meant,In fact it is quite difficult to calculate the B in a distance far away from the magnetic source. But in theory I think a practical formula it is.. so thanks for your helps...