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## Main Question or Discussion Point

Hello,

I'm trying to levitate the iron core of an electromagnet at a certain postion. How can I calculate what the minimum currennt is that I need to put on the electromagnet to prevent the core from falling out at the bottom?

Is there an equation to know at what position the core will be if I put more current on it?

Thanks

I'm trying to levitate the iron core of an electromagnet at a certain postion. How can I calculate what the minimum currennt is that I need to put on the electromagnet to prevent the core from falling out at the bottom?

Is there an equation to know at what position the core will be if I put more current on it?

Thanks