The stresses caused by the bending moment is called -
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A.
Shear stress
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B.
Compressive stress
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C.
Flexural stress
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D.
Tensile stress
Correct Answer:
C. Flexural stress
Explanation:
Flexural stress is the internal resistance developed in a structural member, such as a beam, when it is subjected to an external bending moment. When a beam bends, its internal fibers experience a combination of stresses: those on the concave side are compressed, while those on the convex side are stretched. The term flexural stress specifically describes this normal stress distribution that varies linearly across the cross-section, reaching its maximum at the outermost fibers and remaining zero at the neutral axis. While shear stress relates to forces acting parallel to the cross-section, and compressive or tensile stresses describe individual components of the internal reaction, flexural stress is the comprehensive name for the stress state induced by bending.
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