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 Figure below), and the grindstone comes to rest in 7.50 s.What is the moment of inertia of the grindstone?What force is bringing the grindstone to a stop? What is the net torque caused by that force?What is the size of the force?What is the coefficient of friction between the axe and the grindstone? m = 50.0 kgF = 160 N,

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Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter6: Fundamental Dimensions And Units

Section: Chapter Questions

Problem 35P

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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 Figure below), and the grindstone comes to rest in 7.50 s.

What is the moment of inertia of the grindstone?
What force is bringing the grindstone to a stop? What is the net torque caused by that force?
What is the size of the force?
What is the coefficient of friction between the axe and the grindstone?

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