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-----Original Message-----available.
From: phys-l-bounces@carnot.physics.buffalo.edu [mailto:phys-l-
bounces@carnot.physics.buffalo.edu] On Behalf Of Paul Lulai
Sent: Wednesday, May 14, 2008 11:55 AM
To: Forum for Physics Educators
Subject: [Phys-l] magnetic forces & potential energy
Hello.
I have a student that is trying to design an electric motor. I know
there are a million different (& easy) electric motor designs
He is trying something a bit unique.pounds.
The student has magnets that state they have a 'strength' of 200
I believe that this is the force of attraction btn the magnet and ato
ferromagnetic substance when the two are in contact. Is there a high
school method (algebra or calc 1 method) that would make it possible
calculate:magnets
1- the force of attraction btn two magnets (one electromagnet & one
permanent magnet) when they are separated by some distance?
2- the potential energy of a two magnet system in which the two
are separated?
Your help is appreciated. I haven't used much of my e&m since I took
the course. It appears I've forgotten quite a bit. A bit shameful.
Thanks for your input.
Paul Lulai . . . To wonder is to begin to understand
Physics Instructor
Science Olympiad Coach
US First Robotics Teacher
.: Medtronic - St Anthony RoboHuskie Team 2574:.
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Saint Anthony Village, MN 55418
(w) 612-706-1144
(fax) 612-706-1140
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