An easy one (Rotational Mechanics)

Classical Mechanics Level 3

A grindstone of radius 10 centimeter and moment of inertia 0.2 SI Units rotates at 200 rpm.A tool is pressed against the rim with a force of 50 N along the radial direction. The coefficient of kinetic friction is 0.6. Find the power needed to keep rotating the stone at a fixed rate (in SI Units).

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