The **centrifugal force** is the **apparent force** when it swings out of a dough. You can think of a ball at the end of a string being twisted, or the outward motion you feel when turning a curve while riding in a car. In an **inertial** frame , there is no **external ****acceleration** since the system is not rotating. The ball or your body simply moves in the **straight line** that they were originally following. But in the **rotating** frame of reference of the rope or the car, they seem to **accelerate** .

**Unit:**Newton**Symbol:**N**Formula:**Fcf = mw^{2}r

## What is centrifugal force?

It is a force that arises when the **movement** of a **body** in a **rotational** system is described , or the apparent force perceived by a non- **inertial** observer who is located in a **rotating reference** system .

- What is centrifugal force?
- How it is calculated
- Units
- Applications
- Importance of centrifugal force
- Examples

## What is centrifugal force?

Centrifugal force is the **force** that is produced **out** of a mass when it rotates. Taking into account that the Earth rotates around a **fixed axis** , the direction of the centrifugal force always **moves away** from the axis, it is **opposite** to the direction of **gravity** at the equator ; and at the **poles** of the Earth it is **zero** . It is the necessary inward force that prevents the mass from moving in **a straight line** , it has the same size as the centrifugal force, with the opposite sign. It is important to mention that the centrifugal force is only an **apparent force** .

## How it is calculated

Centrifugal force can be calculated when you know exactly the **mass** and **speed** of the object, as well as the **radius of the circle** in which it is traveling. Then we have that the formula to calculate the centrifugal acceleration is the following:

**Ac = V ^{2} / R**

Formula in which:

- Ac:
**centripetal acceleration** - V =
**tangential velocity** - R =
**radius of gyration**

You can also add the following data:

**V =****ω R**

What is the **angular velocity** or ω and that it is measured in **radians / second** , which we must multiply by the R, which means **radius** .

#### General Formula

**Fcf = mw ^{2} r**

## Units

Centrifugal force can generally be measured associated with a **particle of mass** that is in **motion** (m). For example, in a laundry centrifuge, this particle of mass could be taken as the density of the components of said centrifuge, which are water and clothes.

It can then be measured by the speed of said movement which is known by the name of **angular velocity** and is represented by the letter *” w “* . On the other hand, evidently a position in the

**plane of rotation**(r) that would be the corresponding

**radius**from the

**center**of rotation to where the container on this occasion allows the clothes to be reached, in the case of the washing machine.

Its **general**** formula** is equal to **Fcf = mw ^{2} r** to finally be able to be expressed in the corresponding

**Newton**(N) force measure .

## Applications

The main applications where centrifugal force is used are the following:

- The inclination in the
**curves of the train,**since the centrifugal force that drives the train out when it takes the curve, is counteracted by the force that is manifested when the side of the wheels presses on the rails. - It is used in the
**centrifuge,**which is a machine that rotates a sample to accelerate the decantation or sedimentation of its components. - In centrifugal
**pumps**and turbines that work with liquids and air, respectively. - In the
**casting**of**metals**, for accuracy, safety and quality of the castings. - In
**water pumps**since they rotate the water around in the turbine so that it is expelled through its corresponding opening, taking the water to the place it is needed.

## Importance of centrifugal force

In **physical** and **chemical** studies there is a special method used for the **separation** of **elements** , whether they are liquid or not. This has the purpose of studying its **composition** through a **physical process** that is called **centrifugation** .

The centrifugal force is also responsible for making **rotary circular movements** by means of circular energy causing the elements to be attracted towards a center and in this way they can be **separated** from the other **substance** .

It is for this reason that centrifugal force is a very important process that separates and decomposes **chemical samples** . The results that are made using this process are used for the studies of the elements applied in the **centrifuge** . The importance of this method lies in the infinite uses it has in the different areas of **physics** and **chemistry** for the separation and union of mixtures.

It is then used in fields such as **pharmaceutical** , the **organic chemistry** , the **chemical** basic, the **food** , the **nucleare studies** s and appliances **appliances** that need the process of **filtration** .

## Examples

Some examples of centrifugal force are as follows:

- The
**rotation of the planets**: because in it you can see the centrifugal force that occurs in the elliptical rotation that the planets have with respect to their star . An example of this is our planet earth . **Washing machine**: when we put our clothes to wash in our washing machine, it is very easy to observe the centrifugal force.**Blender**: when the blender is running you can see the centrifugal force. When we make a fruit smoothie with milk you can appreciate the strength even better.- When we observe the
**mud**that is thrown from a**tire**or when we see the children that they feel a**force**that pulls them out when they play on the**carousel .**