Question

The shear stress at the neutral axis in a beam of circular section with diameter 40 mm, subjected to a shear force of 10 kN is ___ MPa.

• A. 10.6

Answer 1

The correct option is A 10.6
Shear stress at neutral axis $=\frac{4}{3}{\tau }_{avg}$
$=\frac{4}{3}\times \frac{V}{A}$
$=\frac{4}{3}\times \frac{10\times {10}^3}{\frac{\pi }{4}\times {40}^2}$
$=10.61MPa$