Question: A permanent bar magnet 1 is vertically oriented so

A permanent bar magnet (# 1) is vertically oriented so that its north end is below its south end. The north end of this magnet feels an upward magnetic force of 1.5 mN from an identical vertically oriented magnet (# 2) that has one end located 2.5 cm directly below the north end of # 1.
(a) Make a sketch showing the orientation of the second magnet’s poles.
(b) A third identical magnet (# 3) is brought in and oriented horizontally so that its north end is closest to # 1 and 2.5 cm directly to the right of its north pole. What is the magnetic force on the north end of magnet # 1 now?

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  • CreatedAugust 29, 2015
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