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October 30th, 2010, 04:49 AM
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Joined: Apr 2010 Posts: 91 Thanks: 0 | Magnetic forces
A rectangular loop of wire 1.00 m wide and 1.50 m long has a mass of 0.150 kg and a resistance of 0.750 ?. The loop falls out of a large region of uniform horizontal magnetic field, as shown, having reached a terminal speed of 2.00 m/s.
I have never really understood why there is always a magnetic force which opposes the applied force and is equal in magnitude. How is this force actually created? With the right hand rule for magnetic forces, I get the force which separates the + and - charges in the wire, but I dont understand where the other magnetic force comes from.
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