sentence: Several men arm the trebuchet by raising the counterweight up and the firing arm down.
sentences_before: The trebuchet works in a simple way. The basket of the trebuchet is filled with heavy rocks. This acts as a counterweight for the other end, which is usually filled with one large rock.
sentences_after: At this point the arm is released, the heavy basket swings down and the arm swings up, launching the rock far and fast.
concept_name: several man
headings: Trebuchet How it works
categories: Siege engines Fortification Weapons