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Which statement about the boom area formula is TRUE?

  • A.The area falls as the stress ratio falls
  • B.The area credited is independent of the stress ratio
  • C.The area credited rises as the stress ratio falls
  • D.The formula applies only to symmetric sections

Answer: A

The factor is two plus the stress ratio, so it falls from three to one across the practical range. Physically, a panel whose stress reverses along its length carries much of its load internally and contributes less to either boom.

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