A grindstone with a radius of 0.610 m is being used to sharpen an ax. (a) If the linear speedof the stone relative to the ax is 1.50 m>s, and the stone’s rotational kinetic energy is 13.0 J,what is its moment of inertia? (b) If the linear speed is doubled to 3.00 m>s, what is the corresponding kinetic energy of the grindstone?

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