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4 Pontoon bridge A floating pontoon bridge is constructed by setting a plank spanning the distance between boats. In the pontoon bridge pictured below the distance between the boats is & and the horizontal cross sectional area of each boat at the waterline is A. The bridge is initially level with a vehicle of mass m half way between the two bridges. Top View L Side View Side View After The vehicle dives a distance a away from the center point causing the boat it is driving toward to float lower and the one it is driving away from to rise, In terms of the density of water p, gravity g, as well as m, A, L, and a what is the angle & that the plank tilts to