Four people are attempting to move a stage platform across the floor. If they exert the horizontal forces shown, determine (a) the equivalent force-couple system at O and (b) the points on the x- and y-axes through which the line of action of the single resultant force R passes. Assume F = 70 lb, F2 = 70 lb, F3 = 47 lb, F4 = 76 lb, a = 79 in., b = 68 in., and 0 = 41°. IA B b. F,

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