# Infinately long magnet

## Homework Statement

What is the force from an infinitely long cylindrical magnet on a magnetic dipole?

## Homework Equations

M=Mz (given in problem)

## The Attempt at a Solution

My argument for this solution that since the magnetization is in the z direction and the cylinder is infinitely long, there is no magnetization outside of the cylinder. I believe this is correct, but would like some feedback to make sure :) Thanks!