Comment by amelius
> Assume an arbitrarily high coefficient of friction between all surfaces
Yes but in practice that means using glue, at which point you might as well glue everything together into a single piece.
> Assume an arbitrarily high coefficient of friction between all surfaces
Yes but in practice that means using glue, at which point you might as well glue everything together into a single piece.
The difference is that glue can withstand tension which changes a lot. Even infinite friction still requires a non-negative contact force (i.e. the surfaces are not being pulled apart).