Ground
Use the Ground tool to change a rigid body or a rigid group to a grounded state.
- From the Geometry ribbon, click the Ground icon.
 - Select bodies that are to be grounded. The grounded body will be highlighted in red.
 - The body icon in the browser changes to 
. - To un-ground, click again on the body.
 
Comments
- A default Ground Body exists in the model whose grounded state cannot be changed.
 - A grounded body/rigid group will not move during simulation.
 - Any connections and markers on the grounded body are moved to the Ground Body.