How Is Lift Force Calculated for an Airplane?

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To calculate the lift force on an airplane, the difference in air pressure above and below the wings must be determined using Bernoulli's principle. The airspeed above the wings is 178 m/s and below is 140 m/s, leading to differing pressures that create lift. The lift force can be calculated using the equation for pressure difference and the wing area, given as 29 m². The density of the air is 0.549 kg/m³, which is essential for these calculations. Ultimately, the net upward lift force can be expressed in kilonewtons (kN).
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Homework Statement


Consider an airplane of wing area 29 m^2 (both wings combined) flying through air of density0.549 kg/m^3 . From the plane’s point of view, the air flowing above the plane’s wings has
speed 178 m/s , but the air flowing below the wings has speed 140 m/s . What is the net upward lift force on the plane? Assume laminar air flow both above and below the plane’s wings. The plane is flying horizontally. Answer in units of kN.


Homework Equations


Pressure = F/A
Rho= m/volume


The Attempt at a Solution


I am so lost, my brother was sick so I had to pick him up from school and I missed the first part of lecture where he explained this. I'm not even sure what equations I can use. PLEASE HELP
 
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