A clockwise couple is applied at some point C somewhere along the span of a beam

Question

A clockwise couple is applied at some point C somewhere along the span of a beam (other than the supports.) What affect does this have on the shear and moment diagrams? Sudden increase in shear diagram at C. Sudden increase in moment diagram at C. Sudden increase in shear diagram at C. Sudden decrease in moment diagram at C. No change in shear diagram at C. Sudden decrease in moment diagram at C. No change in shear diagram at C. No change in moment diagram at C. No change in shear diagram at C. Sudden increase in moment diagram at C. Sudden decrease in shear diagram at C. Sudden decrease in moment diagram at C. Sudden drop in shear diagram at C. Sudden increase in moment diagram at C.

Explanation / Answer

When a clockwise couple is applied at some point C anywhere along the span of the beam other than support then there is no change in shear diagram at point C and sudden increase in moment diagram at point C.

Ans: No change in shear diagram at C.

Sudden increase in moment diagram at C.

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