Final answer:
The Load Factor is the ratio of lift to weight for an airplane. Calculating the necessary airspeed over the wing for lift involves using the air density and aircraft's speed, referring to Bernoulli's principle.
Step-by-step explanation:
Load Factor is the ratio of lift supported by aeroplane wings to the weight of the aeroplane. In the context of aerodynamics and aircraft design, understanding load factor is crucial. For an aircraft at takeoff, which travels at 60.0 m/s with the relative speed of air under the wing also being 60.0 m/s, and the sea level density of air at 1.29 kg/m³, the speed of air over the upper surface will need to be calculated to create the necessary lift force, which is typically about 1000 N per square meter of the wing. Another scenario to consider is when the aircraft is cruising at 245 m/s at an altitude where the air density is one-fourth that of sea level; the speed over the upper surface must be adjusted to maintain lift. These calculations are based on Bernoulli's principle, which is a simplification and disregards other contributions to lift such as aeroplane body and engine thrust.