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Which is measured in newton metres?

  • A.Hinge moment
  • B.Hinge moment coefficient
  • C.Stick force
  • D.Gearing ratio

Answer: A

Hinge moment is a moment and carries units of newton metres. Its coefficient is dimensionless, being the moment divided by dynamic pressure, area and chord. Stick force is a force in newtons, obtained from the moment through the gearing. The gearing ratio is itself dimensionless or in metres per newton metre depending on how it is written. Sorting the four by units is a quick way to check any expression that relates them.

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