After a beautiful 4th of July filled with fireworks , I can't help but wonder. How do fireworks like bottle rockets maintain stability? I'm sure it has something to do with the stick, but can anyone explain it?
The CG is far forward. The corrective moment (force at a distance) is larger for the stick because its CP is far away from the CG. The upper (unstable) moment due to the body tube in front of the CG is smaller because it is not very far from the CG. Subtracting the two moments, the stick wins.