Question

A long cylindrical copper pipe is held vertically above the ground as shown, A stone, bar magnet are

taken and dropped from same level such that barmagnet is into the pipe and stone is outside the pipe.

then
Among the stone and magnet , which one should reach the ground the first ? and why ?​

Answer 1

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According to Faraday’s and Lenz’s laws of electromagnetic induction, the free falling of the bar magnet would cause a change in magnetic flux (the scalar or the dot product of magnetic field with the area-vector (normal) part). This change in magnetic flux per unit time gives the value of the induced emf (electromotive-force) which, according to Lenz’s law gets induced in the direction which opposes the change in flux. Now this opposing force causes deceleration to the freely falling bar magnet till terminal velocity or constant velocity is achieved.

Answer 2

Answer:

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ANSWER

⋆

According to Faraday’s and Lenz’s laws of electromagnetic induction, the free falling of the bar magnet would cause a change in magnetic flux (the scalar or the dot product of magnetic field with the area-vector (normal) part). This change in magnetic flux per unit time gives the value of the induced emf (electromotive-force) which, according to Lenz’s law gets induced in the direction which opposes the change in flux. Now this opposing force causes deceleration to the freely falling bar magnet till terminal velocity or constant velocity is achieved.