Quote Originally Posted by ajaxfetish
The pic that has me scratching my head is the one of the trebuchets, with the inertia-defying rocks. How are they staying there with only one end of the sling attached to the throwing arm? Shouldn't the centrifugal force be flinging them backward at that point? Am I just seeing this wrong, or are they actually defying the laws of physics?

Ajax

Nope, that is quite correct.