Newton’s second law for rotational motion Equation
A thin cord is wrapped around a grindstone of radius 0.30 m and mass 25 kg supported by bearings that produce negligible friction torque. The cord exerts a steady 20-N tension force on the grindstone, causing it to accelerate from rest to 60 rad/s in 12 s. Determine the rotational inertia of the grindstone.
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