What principle states that sideward pressure exerted by a moving fluid decreases as the fluid's velocity increases?

What principle states that sideward pressure exerted by a moving fluid decreases as the fluid's velocity increases?

• A. Archimedes' Principle
• B. Bernoulli's Principle
• C. Pascal's Principle
• D. Newton's Law of Motion

Answer: (B)

Bernoulli's Principle is the correct choice because it states that in a flowing fluid, an increase in the fluid's velocity leads to a decrease in pressure within the fluid. This is a fundamental concept in fluid dynamics, describing how the pressure exerted by a moving fluid varies with speed. As fluid velocity increases, its kinetic energy rises, which causes a corresponding drop in pressure in order to conserve energy within the system.

This principle is crucial in various applications, including aerodynamics, where it helps explain how lift is generated on airplane wings. The relationship between fluid speed and pressure is integral to understanding many phenomena in both natural and engineered systems involving fluid movement.