Problem 10397.
A man of mass 80 kg is standing on the edge of a horizontal platform. The platform is a round uniform disk weighing 160 kg, rotating around a vertical axis passing through the center, with a frequency of 6 rpm. How many revolutions per minute will the platform make if the person moves from the edge of the platform to its center? Calculate the moment of inertia of a person as for a material point.
A detailed solution with a brief note of the conditions, formulas and laws used in the solution, the derivation of the calculation formula and the answer.
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