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If the sum of all the moments in flight is not zero, the aeroplane will rotate about the:
  • A
    neutral point of the aeroplane.
  • B
    centre of gravity.
  • C
    centre of pressure of the wing.
  • D
    aerodynamic centre of the wing.
All moments are referenced to the Centre of Gravity (CG) and if they are not 0, angular acceleration (motion) will happen unless it is neutralised by another equal and opposite moment. In flight, any aircraft will rotate about its centre of gravity, a point which is the average location of the mass of the aircraft.

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