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Given that the total mass of an aeroplane is 112 000 kg with a centre of gravity position at 22.62 m aft of the datum. The centre of gravity limits are between 18 m and 22 m.

How much mass must be removed from the rear hold (30 m aft of the datum) to move the centre of gravity to the middle of the limits:

  • A
    16 529 kg.
  • B
    8 680 kg.
  • C
    43 120 kg.
  • D
    29 344 kg.

Change in Mass / Old Total Mass = Change in CG / Distance from mass to new CG

Transpose formula:

Change in Mass = (Change in CG / distance from mass to new CG) x Old total mass

Change in Mass = (2.62 / 10) x 112,000

Change in Mass = 29,344 kg

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