A small block with mass $0\mathrm{.}0450$kgkg slides in a vertical circle of radius $0\mathrm{.}525$mm on the inside of a circular track. During one of the revolutions of the block, when the block is at the bottom of its path, point AA$,$the magnitude of the normal force exerted on the block by the track has magnitude $3\mathrm{.}85$NN $.$In this same revolution, when the block reaches the top of its path, point BB$,$the magnitude of the normal force exerted on the block has magnitude $0\mathrm{.}680$NN