At the beginning of class, I demonstrated that a piece of metal (a section of copper pipe), when placed around a bar magnet and dropped, was prevented from falling freely due to a force between the metal and the magnet (note, however, that this is NOT a magnetic force). This too is a consequence of Faraday's Law. To experience this for yourself, play with the bar magnet and the copper pipe at the front of the room. First, confirm for yourself that the copper cylinder is not attracted to the bar magnet. Hold the magnet vertically, place the cylinder around the magnet, and then drop it. Observe whether the motion of the copper cylinder is slowed down because of the magnet, then answer the following questions: 12.Making use of Faraday’s law, explain your observations. 13.Explain your observations using energy conservation (kinetic energy, gravitational potential energy, energy dissipation in a conductor as heat, etc.).
At the beginning of class, I demonstrated that a piece of metal (a section of copper pipe), when placed around a bar magnet and dropped, was prevented from falling freely due to a force between the metal and the magnet (note, however, that this is NOT a magnetic force). This too is a consequence of Faraday's Law. To experience this for yourself, play with the bar magnet and the copper pipe at the front of the room. First, confirm for yourself that the copper cylinder is not attracted to the bar magnet. Hold the magnet vertically, place the cylinder around the magnet, and then drop it. Observe whether the motion of the copper cylinder is slowed down because of the magnet, then answer the following questions:
12.Making use of Faraday’s law, explain your observations.
13.Explain your observations using energy conservation (kinetic energy, gravitational potential energy, energy dissipation in a conductor as heat, etc.).
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