Physics problems

let us say that there is a coil of copper hanging from the ceiling so that its radius is parallel to the ceiling and its height perpendicular.  let's also say that there is a current going through the coil such that the magnetic force inside the coil points upward.  now let's say that an iron bar with the same height of the coil is suspended inside, held up by the magnetic force.  there are m tethers attaching the coil to the iron bar radially, evenly spaced throughout the height of the coil.  what is the force on tether k < m and the force on the first k tethers?

Are the tethers conductive?

Are the tethers conductive?

No, but feel free to make them so if you want.

I think calculating the magnetic field is possible, but I am not sure how to calculate the force of repulsion when two magnetic fields are interacting with oneanother. Just wondering, did this problem come from a textbook?

I think calculating the magnetic field is possible, but I am not sure how to calculate the force of repulsion when two magnetic fields are interacting with oneanother. Just wondering, did this problem come from a textbook?

Generally, magnetic fields add together.  This problem is the result of my brain thinking too much about stuff.

The vector summation of magnetic and electric fields was covered in the physics courses I took at uni, but that vector summation technique was not connected to how to calculate force of repulsion. I think calculating force of repulsion is possible, but it is probably more complex than finding the superposition of two or more fields. There may be some empirical formulas but I can not say for sure without research.