A bar magnet is released from rest coaxially | vedclass

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(B) As the bar magnet falls through the copper tube,the change in magnetic flux linked with the tube induces eddy currents in the copper walls.Accordi

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Will move with almost constant speed

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(B) As the bar magnet falls through the copper tube,the change in magnetic flux linked with the tube induces eddy currents in the copper walls.According to Lenz's law,these eddy currents create a magnetic field that opposes the motion of the falling magnet.As the magnet gains speed,the induced electromotive force $(EMF)$ and the resulting eddy currents increase,leading to a greater opposing magnetic force.Eventually,the upward magnetic force balances the downward gravitational force $(mg)$.At this point,the net force on the magnet becomes zero,and it reaches a terminal velocity,moving with an almost constant speed.

$A$ bar magnet is released from rest coaxially along the axis of a very long,vertical copper tube. After some time,the magnet:

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