µω==××=×−−mlBe2222262120 0504 0 104512 16 1084 10..kgmrad sTJTbgchbgch65. The interacting potential energy between the magnetic dipole of the compass and the Earth’s magnetic field is UBBee=− ⋅=−GGµµθcos , where is the angle between Gand GBe. For small angle θ BBeθµκθbg≈−−FHGIKJcos121222where κ= Be. Conservation of energy for the compass then gives 2211const.dIdt⎛⎞
This is the end of the preview. Sign up
access the rest of the document.
This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.