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A bob weight fitted in the control circuit

  • A.Balances the surface aerodynamically
  • B.Adds a stick force proportional to normal acceleration
  • C.Reduces the hinge moment at all speeds
  • D.Acts only on the ground

Answer: B

The mass responds to the aeroplane's acceleration rather than to airspeed, so it increases stick force per g specifically. It is a simple way of meeting the manoeuvring force requirements without altering the aerodynamic balance.

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