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일상을 깊이 들여다 보다

pressure,pascal's law

by 열무파빠 2019. 1. 17.
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Today, let's talk about pressure and the principles of Pascal.

You've heard a lot of words of pressure.

High pressure, low pressure. From the weather forecast ..

Let's talk about pressure units.

The unit of pressure is pa (pascal).

Pascal is written as pa, meaning the force per unit area (the force pushing in the direction perpendicular to the plane).



The unit of force is N (newton). And N = kg m / s ^ 2.

1 Newton is the force when mass of 9.8 kg has acceleration of 1m / s ^ 2.

Now that we know the unit of pressure, let's look at the principles of Pascal.

The principle of Pascal is simple. It is a rule that the pressure given to one side of a fluid in a closed vessel is uniformly distributed uniformly to each part of the liquid at the same magnitude. (from Naver knowledge encyclopedia)
You do not understand well ...?
What if the pressure in the coke can be constant?

 


The force of the air inside the balloon pushing per unit area is the same.
In other words, you can think that the pressure of some space is the same.
This is a car brake that is well used.

It is a good example to take advantage of Pascal's principle of stopping or slowing down a car that runs at 100km / h in 1.5 seconds or 2 tons when you step on the brakes while driving.
The fluid in the confined space mentioned above applies the same pressure to the container. Do you remember well?

Let's take an example of a car brake
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