Solve this multiple-choice question and choose the correct option.

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Stress distribution in simple bending of beams Under the assumptions of simple (Euler–Bernoulli) bending, how does normal bending stress vary from the neutral axis to the outer fibers? Choose the correct variation.

Difficulty: Easy

linearly
parabolically
hyperbolically
elliptically

Correct Answer: linearly

Explanation:

ConceptFrom σ = M y / I, the bending stress is proportional to distance y from the neutral axis. Hence it varies linearly, zero at the NA and maximum at the extreme fibers.

Final Answerlinearly

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