The coefficient of static friction. This attribute is used by the Simulate Rigid Bodies node to calculate particle motion.

When two bodies are in contact and at rest, static friction creates a resistance force that must be overcome by other forces before the bodies start moving. The resistance is along the plane of contact and is proportional to the product of the coefficient and component of force that is pushing the bodies together (e.g., the weight of an object on a sloping surface).

When two bodies are in contact, the coefficient of static friction for their interaction is the product of their respective StaticFriction values. The coefficient of static friction of obstacles is set in the Simulate Rigid Bodies node.

If this attribute is not defined, the default value used by the Simulate Rigid Bodies node is 0.5.