Force on a conductor?

["emacoustics" <michael.wheeler@xxxxxxxx>]

Hey folks, 

Once more I have come to pick your brains! If anyone remembers, I am 
doing a project at Uni that involves simulating a loudspeaker voice 
coil. What I would ideally like to do is to be able to plot a graph 
of the force on the coil (or a point on the coil, for example the 
leading edge) vs current in the coil. Is there a way of obtaining 
the force at a point?

Also, can FEMM output and input numerically? For example running two 
simulations, outputting numerical results to sum the two together (ie 
superposition) and then inputting them back into FEMM as a data 
file? If so, how do I do it?

Many thanks again,

Best Wishes,

Mike