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Statement of a problem № 2592

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A disk of moment of inertia I1 is rotating freely with angular speed w1 when a second, nonrotat ing, disk with moment of inertia I2 is dropped on it (Fig. 10-10). The two then rotate as a unit. Find the final angular speed.

Solution:
A disk of moment of inertia I1 is rotating freely with angular speed w1 when a s

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