---
title: gravity
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/clothsimulationcomponent/gravity
---

# gravity

The gravitational acceleration for the bodies in the simulation, in m/s².

## Declaration

```swift
var gravity: SIMD3<Float>
```

## Discussion

Discussion Expressed in the simulation root entity’s local coordinate space. The default value is 9.81 m/s² in the negative Y axis direction.

## See Also

### Applying forces

- [wind](realitykit/clothsimulationcomponent/wind.md)
- [dampingFactor](realitykit/clothsimulationcomponent/dampingfactor.md)