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A small magnet is dropped into each of two hollow vertical tubes of equal length. One...

A small magnet is dropped into each of two hollow vertical tubes of equal length. One is made of copper and the other is made of aluminum. Does it take longer for the magnet to fall through the aluminum tube, copper tube, or does it take the same amount of time for each?

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Answer #1

9) It will take different amount of time for passing throuch tubes.

The magnet will take longer in passing through aopper tube, because of the falling motion of the magnet, there will be magnetic field induced in the metal because of the changing magnetic field, this creates resistance to free fall. The magnetic slows generating current but gravity also keeps it in action of falling.

Moreover, the conductivity of aluminium is lesser than of the copper, the resistance to free fall of magnet will be there in aluminium tube as well, but lesser in comparision with copper.

Hence, it will take longer time for the magnet to pass through the copper tube than aluminium tube.

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