Pressure - correct statements?

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SUMMARY

The discussion clarifies the concept of pressure in fluids, emphasizing that pressure acts equally in all directions at a point within a fluid. However, when considering pressure exerted on a wall, only the perpendicular component is relevant for calculating force. This distinction is crucial for understanding fluid dynamics and the behavior of fluids in contact with solid surfaces.

PREREQUISITES
  • Understanding of fluid mechanics principles
  • Familiarity with the concept of pressure and its mathematical representation (Pressure = force/area)
  • Knowledge of vector components in physics
  • Basic understanding of solid mechanics and wall interactions
NEXT STEPS
  • Study the principles of hydrostatics and Pascal's law
  • Learn about fluid dynamics and the Navier-Stokes equations
  • Explore the concept of pressure distribution in fluids
  • Investigate applications of pressure in engineering, such as in hydraulic systems
USEFUL FOR

Students of physics, engineers specializing in fluid mechanics, and anyone interested in understanding the behavior of fluids in contact with solid boundaries.

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Homework Statement



In my notes it states that at a point in fluid, pressure act equally in all directions. While at a wall fluid act perpendicular at a wall.

Why ?

Homework Equations



Pressure = force/area

The Attempt at a Solution



Can you please explain to me the reasons behind this
 
Physics news on Phys.org
At a wall, pressure still acts in all directions - but if you want to consider pressure on the wall, only the direction perpendicular to the wall is relevant. If you want to consider forces in the wall, things are different, as the wall is solid.
 

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