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A textbook of mass 1.96 kg rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose diameter is 0.110 m, to a hanging book with mass 2.95 kg . The system is released from rest, and the books are observed to move a distance 1.19 m over a time interval of 0.760 s. What is the moment of inertia of the pulley about its rotation axis?

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