neomorcon
Dec 12, 2013, 12:12 AM
What is the equation for the force from a magnet needed to move a penny?
ebaines
Dec 12, 2013, 06:56 AM
This is a trick question. A US penny is composed of copper and zinc, neither of which is magnetic. So the equation for how a magnet affects a penny is force = 0.
ma0641
Dec 12, 2013, 07:32 AM
Would have to be a WWII steel penny.