Question

Determine the shear stress at the pipe wall

• A. $8\times {10}^{-6}N/m^2$
• B. $3.9\times {10}^{-6}N/m^2$
• C. $2.3\times {10}^{-6}N/m^2$
• D. $10.6\times {10}^{-6}N/m^2$

Answer 1

The correct option is A $8\times {10}^{-6}N/m^2$

We know Shear stress =$\frac{\Delta P}{\Delta L}\frac{d}{4}$

d=2.5/100 m ,$\Delta P=38.4\times {10}^{3}N/m^2$

Shear stress =$\frac{38.4\times 1000\times 2.5}{30\times 4\times 100}=8N/m^2$