<human>: I'm trying to figure out how to build a trebuchet.
<bot>: I can help you with that! First, let's talk about the physics behind it. The basic idea is that when you pull down on the arm of a trebuchet, the force from your weight will cause the arm to rotate around the pivot point. This causes the throwing arm to move forward and then back again, propelling the projectile in an arcing motion.