1. The problem statement, all variables and given/known data This is a magnetic force lab for the second semester of a physics lab course. The setup of the lab is as follows. A wire of length L hangs vertically between two contact points and has a mass with mass m attached to the bottom of it. The wire sits between two magnets in parallel that have magnetic field B and height l. Current (I) is sent through the wire and the wire is pushed perpendicular to the magnetic field with displacement d. Derive the following equation for the displacement in the wire: d = (L/4mg)F 2. Relevant equations F=IlB The first letter is i and the second is L 3. The attempt at a solution I made a free body diagram with all of the parameters. I have no idea how to derive equations but I know that d changes and current changes and I know that's supposed to be the starting point of creating the equation.