Question

In case of a beam for the same shear force, ignoring bending moment, a rectangular beam when compared with a circular section of the same area of cross- section is

• A. Stronger
• B. Weaker
• C. Equal
• D. None of these

Answer 1

The correct option is B Weaker

For rectangular beam,
${\tau }_{max}=\frac{3}{2}{\tau }_{avg}$
For circular beam,
${\tau }_{max}=\frac{4}{3}{\tau }_{avg}<{\tau }_{max}\left(forrectangularbeam\right)$