Pressure in a Fluid: Same in All Directions?

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    Fluid Pressure
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Homework Help Overview

The discussion revolves around the concept of pressure in a fluid, specifically addressing whether pressure is greater in one direction compared to others or if it remains constant in all directions at a given point.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster questions the reasoning behind the assertion that pressure is the same in all directions, given their initial belief that pressure increases with depth. Other participants provide insights into the nature of pressure and its isotropic characteristics at a point in a fluid.

Discussion Status

The discussion is exploring the concept of pressure in fluids, with some participants affirming the idea that pressure is exerted equally in all directions at a point. There is an ongoing exchange of ideas, but no explicit consensus has been reached.

Contextual Notes

The original poster references an answer key that states pressure is the same in all directions, which prompts their inquiry into the reasoning behind this assertion.

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Homework Statement



2. The pressure in a fluid at any point is:

a. greater upward
b. greater downward
c. greater laterally
d. the same in all directions

Homework Equations



n/a

The Attempt at a Solution



I thought the pressure was greater upward because it is greater at greater depth, but the answer key says its the same in all directions. can someone explain why?
 
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Pressure is computed by multiplying the depth below the surface by the density of the fluid. At that specific depth, pressure is exerted in all directions and it is the same in all directions.
 
Ohhh because the point has no area
 
Yes!
 

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