> ## 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.

# Acceleration Load

## About this Block

**What it does:** Applies an acceleration load to a selected region. The applied force is calculated by multiplying the acceleration vector by the element masses and distributing it over the nodes.

**Common uses:**

* Adding gravity to a simulation.

**Tips:**

* The reference Frame defines the components of the Vector. This input is optional. Leaving it blank automatically applies the global coordinate system.
* Acts on a defined FE Region.

## Example File

![Acceleration Load](https://storage.googleapis.com/files-learn/static/ExtendedBlockDocs/acceleration_load.jpg)

***

Applies an acceleration load to a selected region. The applied force is calculated by multiplying the acceleration vector by the element masses and distributing over the nodes.

### Inputs

| Name   | Type                                                               | Description                                                                                                                            |
| ------ | ------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------- |
| Region | [Region](../../../../block-documentation/types/region)             | The region of elements. The load will only be applied to regions with mass.                                                            |
| Vector | [Vector Field](../../../../block-documentation/types/vector-field) | The acceleration vector.                                                                                                               |
| Frame  | [Frame](../../../../block-documentation/types/frame)               | The reference frame for the components of the Vector. If a Frame is not specified, the components are in the global coordinate system. |

### Outputs

| Type                                                           |
| -------------------------------------------------------------- |
| [Body Force](../../../../block-documentation/types/body-force) |