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The bending stress at the neutral axis of a beam is -

The bending stress at the neutral axis of a beam is - Correct Answer Zero

CONCEPT:

  • Stress: Stress is the ratio of the load or force to the cross-sectional area of the material to which the load is applied.
  •  The standard unit of measure for stress is N/m2.
  • The stress is directly proportional to the load and here the load is in terms of bending.
  • Bending: Bending is a process by which metal can be deformed by plastically deforming the material and changing its shape. The surface area of the material does not change much. Bending is deformation about one axis.

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EXPLANATION:

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  • Since at the neutral axis there is no bending of the beam so no stress is developed at the neutral axis.
  • Thus the bending stress at the neutral axis of the beam is zero. So option 3 is correct.

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