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question about lateral force

question about lateral force

Hey guys! First post here!
I have a project going and have a question about lateral forces.  Imagine a rotor fixed on a shaft, this rotor is sitting in a metal conductive cylinder with a 1/4" gap between the two.  Would the attraction keep the rotor from spinning? if so to what effect? Is this resistance or torque measurable?

RE: question about lateral force

sorry, forgot to mention the rotor would have magnets in it. the cyllinder would not be magnetic but would be attracted to the magnets.

RE: question about lateral force

If the cylinder is Iron [magnetic], there will be eddy current and hystersis drag.  If the cylinder is non magnetic, there will be eddy current drag only.

RE: question about lateral force

no windings, just spinning magnets inside of a shield. like sreid wrote, eddy currents will be the drag. calculating them is a whole other story

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