Day 10 - Counter-weight

You should have been thinking about the counter-weight from the start of your build, but today is your day to ensure that you have enough weight and that it can swing freely through the frame during launch articulation. The weight can only move downward at the speed of falling under gravity, so the closer the weight is to the pivot point, the faster the sling end will move in response. Unfortunately, this creates a challenge with extremely low mechanical advantage. Even the light weight of the Lego wheel is enough to slow down the falling of the counter-weight. To address this, you will want to keep adding as much weight to your trebuchet as it can manage.