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The fan draws air through a vent with speed v. If the cross-sectional area of the vent is A, determine the horizontal thrust on the blade. The specific weight of the air is { γ }_{ a } . Given: v = 12 ft/s , A = 2 { ft }^{ 2 } , { γ }_{ a } = 0.076 lb/ { ft }^{ 3 } , g = { 32.2ft/s }^{ 2 }

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