Directions for finding the center of gravity of a rocket, by the “guess and check” method:
1. Tie a string around the body tube of the rocket.
2. Adjust the string to where you estimate the Center of Gravity to be.
3. Swing the rocket around in a circular motion using the string.
-if the rocket’s nose points down, then the string is too far back
-if the rocket’s nose points up, then the string is too far forward
4. Adjust the string until the rocket remains level while swinging it.