Concept of Pascal's Law

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Blaise Pascal was a French physicist. Around 1953, Pascal formulated Pascal's law. The pressure exerted on a liquid in a closed space is transmitted equally in all directions.   #pascalslaw #fluidstatics

Transcript

00:00Hi colleagues, are you still enthusiastic about learning static fluid physics?

00:06Still enthusiastic huh?

00:09This time, we will discuss Pascal's law.

00:13What is Pascal's law?

00:15Let's read the written statement of Pascal's law first.

00:19That the pressure exerted on a liquid in a closed space is transmitted equally in all directions.

00:28Understand this definition correctly.

00:31There are two important sentences there.

00:34The first important sentence is the pressure given.

00:39This means that this is additional pressure, not absolute pressure.

00:47The second important sentence is of the same magnitude.

00:51The additional pressure value is the same.

00:57To understand this concept visually, we have a spherical bottle.

01:04If you look at the front, this bottle is similar to a perfume bottle.

01:11Well, this bottle is filled to the brim with water.

01:17There is a stopper on the bottle cap.

01:22So in this bottle there is no air cavity at all.

01:26This is understandable.

01:31Now, the bottle stopper is pushed down by an external force.

01:37Because the pushing force is perpendicular to the surface of the bottle blockage,

01:43the force exerts pressure.

01:48This is added pressure.

01:53So the additional stress is caused by external processes.

01:59This pressure will be transmitted into the fluid to the same extent.

02:04Let's assume the pressure value is P1.

02:09The value of the additional pressure is the same.

02:13Even though at the surface, the hydrostatic pressure is not the same,

02:18the additional value of the pressure is the same.

02:23If we install a pressure gauge here, here, and here,

02:30so the hydrostatic pressure value at that point is different.

02:35This is true, yes.

02:38When the bottle is blocked, the water in the bottle is trapped.

02:43Each point will receive the same additional pressure.

02:47The hydrostatic pressure value at each point will get the same addition.

02:54This is what is meant by Pascal law.

02:59We will discuss this in more detail in the next series.

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