Does Pressure Force Change with Container Volume in Water Filled Containers?

In summary, the pressure at the bottom of the containers will vary depending on the height of the liquid in each container, which is determined by the container's geometry. The containers have the same area at the bottom and are filled with water of equal mass, but the pressure force will vary due to the different volumes of the containers.
  • #1
Azeri
19
0
I've got a "dilemma" here about Pressure Force:
" Containers with different volumes but with the same areas at the bottom are filled with water of equal mass. Will the Pressure Force vary according to containers?"

First of all I guess Pressure Force must be equal to the Weight [W] of water which is same for all containers W=mg=F , but on the other hand F=PxS=dghS=dgV (P-pressure, S-area at the bottom, d-density of liquid , V-volume of container) and it varies due to the volume of container.

Thanks...
 
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  • #2
pressure depends on depth

The pressure at the bottom of the container depends only the depth (h) below the surface of the water (ignoring atmospheric pressure): [itex]P = \rho g h[/itex]. So what matters is the height of the water in each container. Does the water reach the same height in each container?

(The question is a bit ambiguous, since no mention is made of the shape of the containers.)
 
  • #3
The problem asks about Pressure Force (not Pressure) which causes pressure P=F/S S-Area
 
  • #4
Azeri said:
" Containers with different volumes but with the same areas at the bottom are filled with water of equal mass.

Since the areas of the bottoms are equal, the only thing that can vary the pressure at the bottom of the containers is the height the liquid rises in each container as Doc Al already said. The height that the level rises will be dependent on the containers' geometries.

BTW..."Pressure force" is a horrible term to use. You're either interested in the pressure or the force applied.
 
  • #5
I'm interested in Force applied.
 

1. What is pressure force?

Pressure force is the force exerted by a fluid or gas on an object. It is a result of the collisions between particles in the fluid or gas and the surface of the object.

2. How is pressure force calculated?

Pressure force is calculated by multiplying the pressure (in units of force per unit area) by the surface area of the object that is experiencing the force.

3. Why is pressure force important?

Pressure force is important because it is a fundamental aspect of fluid dynamics and plays a crucial role in many natural and man-made processes. It is also important in engineering and design, as understanding pressure force is necessary for building structures that can withstand different types of fluid or gas pressures.

4. What are some common problems with pressure force?

Some common problems with pressure force include not taking into account the effects of gravity, assuming a constant pressure throughout a fluid or gas, and neglecting the effects of friction and turbulence.

5. How can problems with pressure force be solved?

Problems with pressure force can be solved by using more accurate and complex mathematical models, conducting experiments to measure pressure and force, and taking into account external factors such as gravity, friction, and turbulence. It is also important to carefully consider the assumptions and limitations of any calculations or models used to analyze pressure force.

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