Static pressure is defined as which of the following?

• A. The Pressure Of The Fluid Due To Motion
• B. The Actual Pressure Of The Fluid, Associated With Its State
• C. The Pressure That Exists Only When The Fluid Is At Rest
• D. The Total Pressure In A Dynamic System

Answer: (B)

Static pressure is the pressure the fluid exerts that is tied to the fluid’s state, not its motion. It represents the energy per unit volume associated with the fluid’s condition (like density and thermodynamic state) and acts equally in all directions on surfaces. In a flowing fluid, there is also dynamic pressure, which comes from the fluid’s velocity; the total pressure in the system is the sum of static and dynamic pressures. So static pressure is not the pressure due to motion, and it exists regardless of whether the fluid is moving. The total pressure describes the complete pressure, including the portion from motion, while static pressure alone reflects the fluid’s state.