193_Dynamics 11ed Manual

193_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 13 instant.The boy has a weight W . Neglect his size and the mass of the seat and cords. Given: W 60 lb = θ 1 60 deg = l 10 ft = v G 15 ft s = g 32.2 ft s 2 = Solution: W cos 1 () W g a t = a t g cos 1 = a t 16.1 ft s 2 = 2 TW sin 1 W g v 2 l = T 1 2 W g v G 2 l W sin 1 + = T 46.9 lb = Problem 13-62 At the instant θ = θ 1 the boy’s center of mass G is momentarily at rest. Determine his speed and the
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