Mass
Gives the connected object weight for the physics simulation — objects with a Mass fall and collide.
Output: effect (wire into an Object Selector)
Inputs
| Handle | Type | Meaning |
|---|---|---|
| kg | number | overrides the card slider when wired |
Parameters
| Parameter | Default | Range |
|---|---|---|
| kg | 1 | 0.1–100 |
Practical example
Knock down a tower:
- Stack a few cubes into a tower and place a sphere above them.
- Add a Mass node (kg 5) and an Object Selector picking the sphere; wire Mass → Object Selector.
- Right-click the viewport ▸ Tools ▸ ▶ Simulate physics: the sphere drops into the tower. Objects without a Mass act as static obstacles.
- Stop the simulation — the result stays, as a single undoable step.
Tip
Physics nodes don't run per-frame like animations — they are read once when the simulation starts. One peer runs the simulation at a time and everyone watches the same outcome. Pair Mass with Bounciness and Friction to tune how it lands.