Problem 50. The 10-kg sphere C is released from rest when 0 = 0° and the tension in the spring is 100 N. Determine the speed of the sphere at the instant 0 = 90°. Neglect the mass of rod AB and the size of the sphere. (а) 1.2 m/s (b) 1.7 m/s (с) 2.3 m/s (d) 2.8 m/s (e) None of these

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