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The Boeing 777 aircraft has a takeoff mass of 240000kg and a takeoff speed of 90m/s...

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Physics

The Boeing 777 aircraft has a takeoff mass of 240000kg and atakeoff speed of 90m/s . Assume that's the speed of air across thewing's bottom. The total surface area of both wings is 428m(sqrd).What airflow speed across the top of the wing is necessary for theplane to fly?

I know I have to use bernoulli's equation, but I'm not sure howto get all the variables. Could someone help, and also explain theprocess please?

Answer & Explanation Solved by verified expert
3.6 Ratings (620 Votes)
The velocity over the top of the wing has to be 155 ms at minimum to get it off the ground Assuming that the wing thickness is negligible Also assume 1292 kgm3 m 240000 kg Vb 90 ms    See Answer
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