g A frequently quoted rule of thumb in aircraft design is that wings should produce about 1000 N of lift per square meter of wing. (The fact that a wing has a top and bottom surface does not double its area.) a)At takeoff the aircraft travels at 61.1 m/s, so that the air speed relative to the bottom of the wing is 61.1 m/s. Given the sea level density of air to be 1.29 kg/m3, how fast (in m/s) must it move over the upper surface to create the ideal lift

The value is  

Explanation:

From the question we are told that

The amount of force a square meter of an aircraft wing should produce is

 The air speed relative to the bottom of the wing is  

   The air level density of air is  

Gnerally this  force per square meter  of an aircraft wing is mathematically represented as

Here u is the speed air need to go over the top surface to create the ideal lift

          A  is the area of a square meter i.e  

So              

=>                    

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