Mass & Balancehard#779
To calculate the amount of ballast needed to move the CG to a target position:
A
ballast = total weight / arm
B
ballast = total weight × required CG shift / distance of ballast from new CG
CorrectC
ballast = required CG shift × arm
D
ballast = total moment / total weight
Explanation
Ballast weight = (total weight × required CG shift) / (distance from ballast position to new CG).
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