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Unformatted text preview: Magnetic Dipole Moment: Potential Energy B l Id F d = dF IBdl dF = dF sin IBdl dF = = dl IB F net sin sin 2 RIB F net = sin 2 R B F net = We dont know Force on a Magnetic Dipole B U m = 2 , 1 , m m U U < _ > = = B U x F m us by dx dB x B x U F m us by = = _ dx dU F x = dx dB F x = <0 There is no force if field is uniform! Force on a Magnetic Dipole F x = d ( i B ) dx x dx dB F x = 3 2 4 x B bar x 3 2 4 x dx d F bar x 4 6 4 x F bar x Two magnets 4 2 1 6 4 x F x Force on a Magnetic Dipole...
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 Winter '07
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