# Force

> Add a force to the Rigidbody2D, using its mass.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
Force = 0
```

### Remarks

Apply the force in each FixedUpdate over a duration of time. This mode depends on the mass of rigidbody so more force must be applied to move higher-mass objects the same amount as lower-mass objects.

This mode is useful for setting up realistic physics where it takes more force to move heavier objects.