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QUESTION
A grindstone in the shape of a solid disk with diameter 0.520 and a mass of 50.0 is rotating at 850 .
A grindstone in the shape of a solid disk with diameter 0.520 and a mass of 50.0 is rotating at 850 . You press an ax against the rim with a normal force of 160 (see the figure below), and the grindstone comes to rest in 7.00 . Find the coefficient of kinetic friction between the ax and the grindstone.
