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A skin panel of area \( 400 \) mm\( ^2 \) carries uniform stress and is idealised into the booms at its two ends. Each boom gains

  • A.400 mm^2
  • B.100 mm^2
  • C.800 mm^2
  • D.200 mm^2

Answer: D

Correct answer: 200 mm^2

A panel carrying uniform stress contributes equally to the booms at its two ends, so each takes half of the 400 square millimetres. The general formula weights the two ends according to the stress ratio between them; uniform stress is the special case in which the split is even.

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