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Doctors Medicines MCQs Q&A

  1. Minimum
  2. Zero
  3. Maximum
  4. Infinite
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1 Answers

Option 2 : Zero

The layer of fibres in between which is neither in tension or compression is called the neutral surface. Bending stress on the neutral axis is zero.

Therefore, there won't be any strain on the neutral axis. On the neutral axis, shear stress is non zero, mostly maximum along the neutral axis.

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The neutral axis is an axis in the cross-section of a beam (a member resisting bending) or shaft along which there are no longitudinal stresses or strains. If the section is symmetric, isotropic and is not curved before a bend occurs, then the neutral axis is at the geometric centroid. All fibres on one side of the neutral axis are in a state of tension, while those on the opposite side are in compression.

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