WORKS!!!!!!
thanx a lot man!!!!!
I wonder what should I do to make the hook active towards to elbow thing? I mean, this way the whole object is static towards the hook, and there is only one movement, the sliding on the pipe... what should I do to make all three objects independent and colliding to one another?
thanx for this a lot!!!

hey there guys!!!
sorry for the newbie question but I have a problem.. I have this object that has a hole in it, through which I want to add a sort of a "hanger".... how can I achieve this in sketchy physix? I want to be able to move this upper stick so the elbow-like figure can be driven through the hanger movement???
thanx in advance!!!
my model

definatelly collision hehe sorry for the zero in terminology
on to it already
thanx a lot!!!

no no... i meant to avoid intersecting AT ALL... for example, if I had a ball, sphere...and a 3D box... is there any way sketchup can PREVENT the ball EVER intersecting into the box? I mean, whatever I do, the ball just avoids "entering" the box 3D object??? i have to make some simulations in my firm and sketchup would be ideal but dont know how:(

hey there guys!!
I have a veeeeeery bad newbie question
how to make two objects in sketchup interact with each other? For instance, you have two cubes and they cannot intersect if the two geometries "touch" eachother, either by you moving them or in animation???? is there any way!!
thanx a bunch!