Answered: (b) A grindstone in the shape of a… | bartleby

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(b) A grindstone in the shape of a solid disk with diameter 0.520 m and a
mass of 50.0 kg is rotating at 850 rev/min. You press an axe against
the rim with a normal force of 160 N (see below), and the grindstone
comes to rest in 7.50 s. Find the coefficient of kinetic friction be-
tween the axe and the grindstone. There is negligible friction in the
bearings.
m = 50.0 kg
F = 160 N

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