At the instant u = 60, the boys center of mass G is
Chapter 13, Problem 13-61(choose chapter or problem)
At the instant u = 60, the boys center of mass G is momentarily at rest. Determine his speed and the tension in each of the two supporting cords of the swing when u = 90. The boy has a weight of 60 lb. Neglect his size and the mass of the seat and cords.
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