=( unfortunately, it is not that simple. It's spawning well above the terrain. When if falls, there is some collision, to the extent that the torus' fall is briefly slowed to a near stop, however it then continues to sink, like how when Golum in LotR 3 hit the lava, then begun to sink. I'm tempted to think that somehow it's only applying the physics to the individual vertexes, rather than as to the object's faces as well.