A magnetic iron block of 0.500 kg sits on a level steel plate. The coefficient of static and kinetic friction among the block and plane are 0.500 and 0.300, respectively. The horizontal force of magnitude 5.00 N is applied to the block, trying to slide the block across the sheet. Determine what should be the minumum magnetic force attracting the block to the sheet in order to keep it from sliding? Round to two significant figures.