Problem H.W : In a 45° bend a rectangular air duct of I m? cross-sectional area is gradually reduced to 0.5 m2 area. Find the magnitude and direction of the force required to hold the duct in position if the velocity of flow at the 1 m2 section is 10 m/s, and pressure is 2.943 N/cm?. Take density of air as 1.16 kg/m3.
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