2. A barge in the form of a closed rectangular tank 20m long by 4m wide floats in water. If the bottom is 1.5m below the surface, what is the water force on one long side and at what level below the surface does it act? If a uniform pressure of 50−2 gauge is applied inside the barge what will be the new magnitude and point of action of the resultant force on the side? The deck is 0.2m above water level