There are two holes one each along opposite sides of a wide rectangular tank.The cross section of each hole  is 0.01 square meter and the vertical distance between the holes is one metre.The tank is filled with water.the net force on tank (in newton) when water flows out of the holes is :(density of the water is 1000 kilogram per meter cube)

1)100            2)200        3)300       4)400

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