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You have a grindstone that is 90.0kg has a 0.340m radius, and is turning at 90.0rpm, and you press a steel axe against it with

You have a grindstone that is 90.0kg has a 0.340m radius, and is turning at 90.0rpm, and you press a steel axe against it with a radial force of 20.0N 9a) Assuming the kinetic coefficient of friction between steel and stone is 0.20, calculate the angular acceleration of the grindstone. b How many turns will the stonde make before coming to rest

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