# multiplyColliderForceByParticleSize

> Specifies whether the physics system considers particle sizes when it applies forces to Colliders.

## Definition

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

```csharp
public bool multiplyColliderForceByParticleSize { get; set; }
```

### Remarks

If enabled, the force applied to a collider is proportional to the area (2D) or volume (3D) of the particle hitting the collider. Additional Resources: [ParticleSystem.CollisionModule.colliderForce](/engine/6000.0/script-reference/unityengine/particlesystem/collisionmodule/colliderforce.md), [ParticleSystem.collision](/engine/6000.0/script-reference/unityengine/particlesystem/collision.md).