Help Rope goes inside collider when stretched

[josemendez]

Thanks for the answer, actually the attachment is dynamic,

Then the only possible cause for this is that you're moving the ball by setting its transform, instead of applying forces. If you force the ball to be at a specific location, you're ignoring any forces applied by the rope via the attachment.

Can I make rope longer when I'm stretching it, to avoid overstretching? So Rope will become longe and there will not be overstretching case

Yes, you can use a cursor to make the rope longer:
http://obi.virtualmethodstudio.com/manua...ursor.html

Or have a certain amount of pre-existing rope like in the included "WrapTheRope" sample scene (which pretty much does exactly what you're looking for: wrap a rope around pegs)