Pressure in a Fluid: Same in All Directions?

  • Thread starter Thread starter physgrl
  • Start date Start date
  • Tags Tags
    Fluid Pressure
AI Thread Summary
The pressure in a fluid at any point is the same in all directions, as confirmed by the discussion. While one participant initially believed pressure increases upward due to greater depth, it was clarified that pressure is calculated by multiplying depth by fluid density. This results in uniform pressure exerted in all directions at a specific depth. The concept that pressure acts equally in all directions is fundamental in fluid mechanics. Understanding this principle is essential for solving related problems in physics.
physgrl
Messages
138
Reaction score
0

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?
 
Physics news on Phys.org
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!
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Thread 'Trying to understand the logic behind adding vectors with an angle between them'
My initial calculation was to subtract V1 from V2 to show that from the perspective of the second aircraft the first one is -300km/h. So i checked with ChatGPT and it said I cant just subtract them because I have an angle between them. So I dont understand the reasoning of it. Like why should a velocity be dependent on an angle? I was thinking about how it would look like if the planes where parallel to each other, and then how it look like if one is turning away and I dont see it. Since...
Back
Top