labview1958 Posted December 27, 2005 Share Posted December 27, 2005 The formula for the maximum force between identical magnets is: F = AB^2/2mu where A = cross-section area of the magnet in m^2. I have taken out two identical magnets from the manufacturer pack rated at 1.23 Tesla. I have found the Force by calculation to be 100N or can lift 10 kg. However the manufacturer pack says that one magnet can lift 4 kg. Is there a flaw in the formula or calculation? Link to comment Share on other sites More sharing options...
insane_alien Posted December 28, 2005 Share Posted December 28, 2005 wrong calculation is the problem. the equation you used was for 2 magnets attractin/repelling each other. you want an equation to work out the force on something that isn't a magnet Link to comment Share on other sites More sharing options...
Kedas Posted December 28, 2005 Share Posted December 28, 2005 http://www.answers.com/topic/magnet Link to comment Share on other sites More sharing options...
labview1958 Posted December 29, 2005 Author Share Posted December 29, 2005 The magnets are rated at 1.23 Tesla. Should I use 1.23 Tesla or use this formula: B = mu(H+M) where H is 1.23T and M=0? Thus B=muH where H=1.23T, thus a much weaker B in my formula? Link to comment Share on other sites More sharing options...
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