experimenting with magnets, could a wiser person tell me why after building a solid magnet statetor and solid magnet rotor having massive torque; no mater what energy you put into driving this apperatus there in no heat generated in the poles
2007-01-22 20:07:46 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
to first answer why?
2007-01-22 20:16:38 · update #1
I like your question, made me think, the energy must be going somewhere, I'd like a bit more info on size and energy input, if you are inputting enough energy to just overcome the drag then ignoring mechanical losses, if you have a one horsepower motor then 746 watts are going somewhere.
2007-01-23 02:26:31 · answer #1 · answered by bo nidle 4 · 0⤊ 0⤋
I assume by 'solid' your mean 'permanent'.
And by 'energy you put in' I assume you mean mechanical energy (by forcing the rotor to turn against the magnetic field of the stator).
Plainly heat is being generated some-where = turning the rotor against resistance MUST be absorbing energy, and that must turn up as heat.
The heat will be found in the rotor/stator/bearings & I expect will 'even out' quite quickley (since I assume apparatus is made of metal)
You need to know the mass of the apparatus, it's specific heat value and the energy going in.
I'm sure it is heating up, only too little to be noticed...
2007-01-23 04:28:57 · answer #2 · answered by Steve B 7 · 0⤊ 0⤋
no friction.
2007-01-23 04:10:07 · answer #3 · answered by Joe D 3 · 0⤊ 0⤋