Determine the change in the angular speed of rotation

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Determine the change in the angular speed of rotation of the skater when moving to attention, if in the arabesque stance the rotation speed was 2 rad / s. Calculate the work performed by the skater during the transition from one stance to another, considering the moment of inertia in the arabesque stance equal to 8 kg · m2, in the attention stance - 1.2 kg · m2.

Task 00101. Detailed solution with a brief record of the conditions, formulas and laws used in the decision, the conclusion of the calculation formula and the answer.
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