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When the stress at one end of a panel is equal and opposite to that at the other, the boom area contribution is

  • A.A half of the panel area at each end
  • B.The whole panel area at each end
  • C.Zero at both ends
  • D.A sixth of the panel area at each end

Answer: D

Substituting a stress ratio of minus one into the boom formula leaves a factor of one, giving one sixth of the panel area to each end. Compare the uniform-stress case, where the factor is three and each end receives a half.

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