# A bar magnet falls under the influence of gravity along the axis of a long copper tube. If air resistance is negligible, will there be a force to oppose the descent of the magnet? If so, will the magnet reach a terminal velocity?

A bar magnet falls under the influence of gravity along the axis of a long copper tube. If air resistance is negligible, will there be a force to oppose the descent of the magnet? If so, will the magnet reach a terminal velocity?
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The magnetic field of the magnet induces a current in the copper tube. This current moves in the opposite direction of the magnetic field of the magnet. So, the answer is yes there will be a force to oppose the descent of the magnet.
Also, the answer is yes, the magnet reaches a terminal velocity where the induced current induces a magnetic field in the opposite direction which decreases the speed of the magnet.
Result:
Yes