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In which of the following cases, there exists the situation of Pure Bending in some part of the beam or along the entire beam? i) A simply supported beam subjected to two equally spaced downward concentrated loads ii) A simply supported beam subjected to two equally spaced opposite moments iii) A cantilever beam subjected to clockwise moment at free end iv) An overhanging beam with both side overhangs subjected to different concentrated loads at both the free ends

In which of the following cases, there exists the situation of Pure Bending in some part of the beam or along the entire beam? i) A simply supported beam subjected to two equally spaced downward concentrated loads ii) A simply supported beam subjected to two equally spaced opposite moments iii) A cantilever beam subjected to clockwise moment at free end iv) An overhanging beam with both side overhangs subjected to different concentrated loads at both the free ends Correct Answer (i), (ii) and (iii)

Pure bending along the entire beam ⇒ No shear force along the entire beam.

Pure bending in same part ⇒ No shear force in some part.

Case I:

Simply supported beam subjected to equally space downward concentrated loads.

∴ Case IV will be true only when P1 = P2.

∴ Case (I), (ii), and (iii) are pure bending cases.

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