# Loss of energy when permanent magnet falls trough coil?

Is there a loss of mechanical energy when a permanent magnet falls trough a coil?

Given a magnet with mass m and a coil with N windings. The coil is placed vertically so the magnet can fall trough. The magnet is dropped from a height H, at this point the mehchanical energy is equal to mgH. I want to calculate the mechanical energy at the bottom of the coil. I assume energy is conserved so this should also be equal to mgH. Is the energy conserved? if not, would I be able to calculate the loss?

Part of the energy will be used up in driving eddy currents (induced currents) in the coil, so the final energy of the magnet will not be $$mgH$$. The total energy of the magnet $$+$$ coil system will, however, be conserved. Exact calculations will require knowing the geometry of the coils, the material they are made out of, etc. and solving Maxwell's Equations.