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An iron bar falling vertically through the hollow region of a thick cylindrical shell made of copper experiences a retarding force and attains a terminal velocity. What can you conclude about the iron bar?

An iron bar falling vertically through the hollow region of a thick cylindrical shell made of copper experiences a retarding force and attains a terminal velocity. What can you conclude about the iron bar?

Grade:upto college level

1 Answers

Lion Priyanshu
13 Points
3 years ago
This shows that the iron bar is magnetic as when it falls through a conducting cylinder it brings change in flux and according to Lenz's law the induced emf in the conducting cylinder tries to retard the motion of the falling magnet.
 

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