Correct Answer:
B. Bernoulli’s Principle.
Explanation:
The correct answer is Bernoulli’s Principle. because it explains how variations in fluid velocity alter static pressure across an aerodynamic surface.
- Step 1 (Velocity and Pressure): Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in static pressure. Curved wing shapes cause air to move faster over the top surface.
- Step 2 (Lift Creation): The high velocity over the top generates a lower pressure zone compared to the slower air underneath, resulting in an upward aerodynamic lift force.
- Incorrect Options:
- Archimedes' Principle is incorrect because it dictates buoyant forces in fluids, explaining why boats float, not how aerodynamic wings function.
- Pascal's Law is incorrect because it deals with pressure transmission in enclosed static fluids, forming the basis for hydraulic systems.
- Newton's Third Law is incorrect in this specific option choice context because, while action-reaction forces do contribute to total lift via downwash deflection, Bernoulli's pressure differential is the intended physical principle here.