> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Can I apply a centrifugal force to my part?

## Question:

Can I apply a centrifugal force to my part?

## Answer:

<Note>
  This article uses Simulation/Optimization and both of them in nTop have two requirements: FE Mesh and Boundary Conditions (BCs). Follow the instructions in the links below to prepare your model for simulation.

  **FE Mesh**

  * [How to create an FE Volume Mesh](/help-articles/knowledge-base/meshing-workflows/how-to-create-an-fe-volume-mesh)
  * [How to create a Simulation Model](/help-articles/knowledge-base/structures/how-to-create-a-simulation-model)

  **Boundary Conditions (BCs)**

  * [How to select boundaries of an FE Mesh - FE Boundary by Flood Fill](/help-articles/knowledge-base/structures/how-to-select-boundaries-of-an-fe-mesh-fe-boundary-by-flood-fill)
  * [How to choose boundaries of an FE Mesh - FE Boundary by Body](/help-articles/knowledge-base/structures/how-to-select-boundaries-using-boundary-by-body)
  * [How to use Boundary Conditions](/help-articles/knowledge-base/structures/how-to-use-boundary-conditions)
  * [How to use a CAD Face in a boundary condition](https://support.ntopology.com/hc/en-us/articles/4609628488083)
</Note>

You can apply a centrifugal force using the **Rotational Force** ([beta](/help-articles/knowledge-base/user-interface/what-are-beta-blocks)) block. This block allows you to apply an acceleration load (centrifugal force) caused by a constant rotational velocity.

To use it, choose the region where the load is applied, set an axis, and define the rate in Hz. Check out the attached example to see how this block is used in a **Static Analysis**.

![The rotational force block](https://files.learn.ntop.com/help-articles/structures/41632168258579.png)

## Download the Example file:

* [Example file](https://files.learn.ntop.com/Support%20Article%20Example%20Files/Knowledge%20Base/Simulation/Centrifugal%20Force%20Example.ntop)

## Keywords:

*simulation static analysis Design Analysis centrifugal rotational velocity rotational*