A firm wants to determine the amount of frictional torque in their current line of grindstones, so they can redesign them to be more energy efficient. To do this, they ask you to test thebest-selling model, which is basically a diskshaped grindstone of mass 1.1 kg and radius 7.70 cm which operates at 700 rev/min. When the power is shut off, you time the grindstone andfind it takes 25.0 s for it to stop rotating.(a) What is the angular acceleration of the grindstone? (Assume constant angular acceleration.)rad/s2(b) What is the frictional torque exerted on the grindstone?N-meBook

Solution: Given data ω0=700 rev/min mass = 1.1 kg r=7.70 cm=7.7×10-2 m (a) Angular acceleration of…

Answered: A firm wants to determine the amount of…

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