The barge B has weight { W }_{ B } and supports an automobile weighing { W }_{ a } . If the barge is not tied to the pier P and someone drives the automobile to the other side of the barge for unloading, determine how far the barge moves away from the pier. Neglect the resistance of the water.Given: { W }_{ B } = 30000 lb , { W }_{ a } = 3000 lb , d = 200 ft , g = { 32.2ft/s }^{ 2 }