According to Pascal's law, what statement is correct?

Pascal's law states that when pressure is applied to a confined fluid, that pressure is transmitted undiminished throughout the fluid in all directions. This principle is fundamental in various hydraulic systems, such as hydraulic presses and brakes, where a small force applied to a small area can be transformed into a larger force over a larger area, enabling the movement or lifting of heavy objects.

Understanding this concept is essential for millwrights, as it allows them to design and troubleshoot systems that rely on hydraulic principles. In practical applications, this means that any change in pressure at one point in the fluid will be reflected equally at all other points, ensuring that hydraulic systems operate efficiently and predictably.

The other options, while related to principles in physics and fluid dynamics, do not accurately reflect Pascal's law or its implications. They pertain to different aspects of energy conservation or dynamics rather than the behavior of pressure in a confined fluid.