A thin,massless string is wrapped around a 0.25m radius grindstone supported by bearings that produce negligible frictional torque.A steady tension of 20 N in the string causes the grindstone to move from rest to a speed of 60 rad/s in 12s.The moment of inertia of the grindstone is A)1.0 kg · m² B)2.0 kg · m² C)3.0 kg · m² D)4.0 kg · m² E)5.0 kg · m²

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The Answer of A thin,massless string is wrapped around a 0.25m radius grindstone supported by bearings that produce negligible frictional torque.A steady tension of 20 N in the string causes the grindstone to move from rest to a speed of 60 rad/s in 12s.The moment of inertia of the grindstone is A)1.0 kg · m² B)2.0 kg · m² C)3.0 kg · m² D)4.0 kg · m² E)5.0 kg · m²

A Thin,massless String Is Wrapped Around a 0