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Unformatted text preview: Magnetic Dipole Moment: Potential Energy B l Id F d Ã— = dF IBdl dF = dF âŠ¥ Î¸ sin IBdl dF = âŠ¥ âˆ« = dl IB F net sin Ï€ sin 2 RIB F net = Î¼ sin 2 R B F net = We donâ€™t know Î¸ Force on a Magnetic Dipole B U m â‹… âˆ’ = Î¼ 2 , 1 , m m U U < _ > Î” âˆ’ = Î” = Î” B U x F m us by dx dB x B x U F m us by âˆ’ â†’ Î” Î” âˆ’ = Î” Î” = _ dx dU F x âˆ’ = dx dB F x = <0 There is no force if field is uniform! Force on a Magnetic Dipole F x = âˆ’ d ( âˆ’ i B ) dx x dx dB F x Î¼ = 3 2 4 x B bar x Ï€ â‰ˆ âŽŸ âŽ âŽž âŽœ âŽ âŽ› â‰ˆ 3 2 4 x dx d F bar x 4 6 4 x F bar x Î¼Î¼ âˆ’ â‰ˆ Two magnets 4 2 1 6 4 x F x âˆ’ â‰ˆ Force on a Magnetic Dipole...
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 Winter '07
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 Current, Energy, Force, Potential Energy, Fundamental physics concepts, Magnetic dipole moment

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