# Suppose you exert a force of 180 N tangential to the outer edge of a 1.44-m...

###### Question:

 Suppose you exert a force of 180 N tangential to the outer edge of a 1.44-m radius 73.5-kg grindstone (which is a solid disk).
Part (a) What is the torque τ, in newton meters, you are exerting on the grindstone, relative to the center of mass of the grindstone? Part (b) What is the angular acceleration of the grindstone α0, in radians per square second, assuming negligible friction?
Part (c) What is the angular acceleration of the grindstone αf, in radians per square second, if there is an opposing frictional force of 22.5 N exerted 0.45 m from the axis?
 αf =
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