A pin-connected truss is loaded and supported as shown. Each aluminum member has a cross- sectional area of A = 2.4 in.². Assume a = 4.00 ft and b = 4.80 ft. If the normal stress in each member must not exceed 25 ksi, determine the maximum load Pmax that may be supported by the structure. a Answer: Pmax= IN = b B E b ง P

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