The Effect of Number of Magnets Falling Inside a Copper Tube on the Back Emf Created

Korkusuz, Ata (2018) The Effect of Number of Magnets Falling Inside a Copper Tube on the Back Emf Created. Other thesis, TED Ankara Koleji.

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I find it enlightening to try to explain the phenomena that happen around me with the laws of physics. A friend of mine had came up with a projectile shooter that uses magnetism to speed up an iron projectile. Than the idea of using a magnet as the projectile came into my mind. Since the device used magnetism as a force source, I thought the projectile would shoot out even faster than the iron one. It was a surprise to see the magnet just fall almost straight to the ground. That is when I made a thought experiment to find the reason behind my observation. It was apparent that the the magnet was causing a force opposite of the direction of movement. However, how this force was created was not that obvious. After some research. I found out that the phenomena I observed was related to the Faraday’s Law and Eddie currents, and the Lenz’s Law. Faraday’s Law states a change in magnetic field(flux) induces a current on a conductive material. Lenz’s Law states that the induced current produces magnetic fields which opposes the change in magnetic flux that induces such currents. These two laws are in effect when a magnet moves beside a metallic plate, which in return slows down the magnet. The back emf on effect in result applies a force directly opposite of the direction of movement.

Item Type: Thesis (Other)
Uncontrolled Keywords: Faraday’s Law, Lenz’s Law, magnets
Subjects: Q Science > QC Physics
Depositing User: Users 114 not found.
Date Deposited: 09 Oct 2018 09:27
Last Modified: 09 Oct 2018 09:27

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