2 trucks of mass 6kg and 2 kg are positioned on a uniform bridge. The bridge is 6m long and weighs 50N. P and Q are the forces of the bridge supports. The 6kg truck is positioned 1m from bridge support P and the 2kg truck is positioned 2m from bridge support Q. Take moments about the left end of the bridge (point A). a) Calculate the total of the clockwise moments about point A. b) Use Your answer to part a) to calculate the reaction force Q.
Physics question. HARD!!!?
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