What is the Relation between Pressure Force and Area?

What is the SI Unit for Pressure? What is the Formula to Calculate Pressure and Area? Is Pressure Force Per Unit Area? How do you Calculate Force, Pressure, and Area?

You all have studied physics. For some, it is an easy task but for others, it is a nightmare. Physics is not actually tough; it just requires a proper explanation of the terms and values and how to correctly use them. But here we are going to talk about pressure in the simplest of terms and you are definitely going to enjoy this! In this article, we will look at the answer to what is the relation between pressure force and area. We will discuss the SI unit of pressure among other things. And trust me, you are going to enjoy this even if you hate physics. So, let’s start!

1. What is the SI unit for Pressure?

The SI unit is mainly known as the International System of Units. The SI unit for pressure is Pascal. Pascal is represented as Pa. Pascal is equal to one Newton per square meter. The name Pascal was given in 1971. Before that, the measurement of the SI unit Pascal was Newtons per square meter.

There are different types of pressures such as gauge, differential, absolute, and atmospheric pressure. (See How Can You Measure Air Pressure?)

2. What is the Formula to Calculate Pressure?

To calculate pressure, the force is divided by area. The formula to calculate pressure is P = F/A. Pascal is represented as Pa in the short version. The force is applied to the object and is perpendicular to the surface of the object per unit area. So, what is the relation between pressure force and area? Pressure is calculated as P = F/A, where P is the pressure in Pascal, F is the force on the object, and A is the area on which the force acts. (See What are Examples of Pulleys in Everyday Life?)

3. What is the Formula for Pressure Area?

The definition of pressure is the force exerted on a surface. This force is divided by the area over which the force acts. The formula for pressure is P = F/A. Force is the external agent, strength, or energy that can influence and change the motion of the object. Through force, the object with mass can change its velocity. And, it is measured in units of Newton.

The area is the amount and range of surface that a two-dimensional object can cover. It is the total space taken up by an object. The area is measured in square units. A square meter (m²) is the SI unit of area. (See How can You measure Temperature?)

4. Is Pressure Force Per Unit Area?

Yes. The equation for pressure is simply the force divided by the area upon which the force is applied. Check out what does a barometer measure?

5. What is the Relation between Pressure Force and Area?

Pressure is the force per unit area. Pressure is defined as the force on an object that is spread over a specific surface area.

The equation for pressure is written the force which is divided by the area where the force is applied. Pressure is the physical quantity. The equation is, P = F/A, the answer to what is the relation between pressure force and area where F is the force applied and A is the area over which the force is applied. As area increases pressure decreases, which makes pressure inversely proportional to area.

Hence, with the above explanation, we can conclude that pressure is directly proportional to force and inversely proportional to area. (Read How to find Current Barometric Pressure near you?)

6. How do you Calculate Force Pressure and Area?

Image by Andreas Glöckner from Pixabay

We have already seen what is the relation between pressure force and area, which makes it easy for us to calculate force pressure and area. Force, pressure, and area, all three are related to each other. The formula to calculate pressure is P = F/A, where F is the force applied and A is the area over which the force is applied. We can calculate force and area using this formula by interchanging the values.

To calculate force, multiply the area by pressure. The SI unit of area is a square meter (m²). To calculate the area, divide the force by pressure. The SI unit of force is Newton, which is represented by the symbol N. (See What Instrument is Used to Measure Mass of an Object?)

7. How can you Calculate Pressure if Area is Given?

It is easy to calculate pressure if an area is given to you. The formula to calculate pressure is P = F/A.

Here, P is the pressure to be calculated, F is the force that is applied, and A is the area upon which the force is applied.

To find the pressure, firstly, you have to make sure that all the values are in the same unit, ie., newtons/meters squared or pounds/inches squared. If the values are not in the same units, you will not get the correct answer to your question. You will also need the value for force to calculate the pressure from the area. After this, put the values in the formula. To calculate pressure, the force will have to be divided by the area.

Once you do all the steps mentioned, you will get your answer. The answer will be expressed in Pascal (Pa), which is the SI unit for pressure. (See What are the Factors Pressure depends on?)

8. How do you Calculate Pressure from Force?

By author Roman Mager on Unsplash

It is not a difficult task to calculate pressure from force. To calculate pressure, the standard formula is P = F/A, where F is the force applied to the surface, A is the area or surface over which the force is applied, and P is the pressure that is calculated in the process.

The values need to be in the same unit for you to get the correct answer. They should be either in the format newtons/meters squared or pounds/inches squared. Once you have converted the values in the respective units, you will have to put values in the formula. To calculate pressure, you should have the force and area. You simply have to put values in the formula and do the calculations to get the answer. 

Isn’t this such an easy thing? The thing that was a nightmare during school days turned out to be something this simple! So, now we know what is the relation between pressure force and area. We have also looked at the process to calculate pressure if area is given in such simple terms. Isn’t this place your go-to when you have doubts regarding anything? If it isn’t, then make it now! (See Is Pressure Altitude the Same as True Altitude?)

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