Force on a Magnet Moving through a Wire Loop

[dedicateddan]

Homework Statement

What is the force acting on a magnetic dipole that falls through a loop of wire?

Any sort of answer, exact, approximate or a reference to a source that covers this would be excellent. I haven't been able to find much of anything on this problem.

Homework Equations

The Attempt at a Solution

Start with:
V=-d(BA)/dt
V=I*R_circuit + L*dI/dt
B-field of a loop of wire
U=-m*B
F=-dU/dx (and this is hugely messy and nonlinear)

 

[rude man]

For openers, I believe it depends on the resistance of the wire loop.