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Meeting #11. T HE S ETUP Piece of Steel Magnet Copper Tube: Conductive Non-magnetic.

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Presentation on theme: "Meeting #11. T HE S ETUP Piece of Steel Magnet Copper Tube: Conductive Non-magnetic."— Presentation transcript:

1 Meeting #11

2 T HE S ETUP Piece of Steel Magnet Copper Tube: Conductive Non-magnetic

3 T HE E XPERIMENT Video Link: http://video.mit.edu/watch/physics- demo-lenzs-law-with-copper-pipe-10268/http://video.mit.edu/watch/physics- demo-lenzs-law-with-copper-pipe-10268/ Extra Link: http://regentsprep.org/Regents/physics/phys08/cle nslaw/ http://regentsprep.org/Regents/physics/phys08/cle nslaw/

4 S TEEL Accelerates close to gravity Air resistance is only upwards force (negligible)

5 M AGNET

6 Changing Magnetic Field Induced Current

7 T O S UM IT U P The falling magnet induces a current within the tube. By Lenz’s law, the current creates a magnetic field that opposes the field of the falling magnet. The magnet feels a resistive (upward) force, and falls slowly.

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