GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
An airplane wing is designed to produce lift resulting from.
A
positive air pressure below and above the wing’s surface along with the downward deflection of air
B
Positive air pressure below the wing’s surface and negative air pressure above the wing’s surface along with the downward deflection of air.
C
Negative air pressure below the wing’s surface and positive air pressure above the wing’s surface along with the downward defection of air
D
None of the above
Explanation: 

Detailed explanation-1: -The faster air flowing over the top of the wing creates lower pressure than the slower moving air under the wing. Lift is partially achieved because high-pressure air pushes toward low-pressure air, pulling the airplane upward.

Detailed explanation-2: -Newton’s third law of motion states that, for every action, there is an equal and opposite reaction. Based on this law, wings are forced upwards because they are tilted, pushing air downwards so the wings get pushed upwards.

Detailed explanation-3: -According to Newton’s third law of motion, the action of the wings moving through the air creates lift. In its simplest explanation, lift is a product of wing shape and the outcome of the total pressure on the bottom of the wing being greater than the total pressure on top of the wing.

Detailed explanation-4: -Lift is the force that directly opposes the weight of an airplane and holds the airplane in the air. Lift is generated by every part of the airplane, but most of the lift on a normal airliner is generated by the wings. Lift is a mechanical aerodynamic force produced by the motion of the airplane through the air.

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