Question

An external force of $10N$ acts normally on a square area of each side $50cm$. The stress produced in equilibrium state is

• A. $10N/m^2$
• B. $20N/m^2$
• C. $40N/m^2$
• D. $50N/m^2$

Answer 1

Answer: (C)

$40N/m^2$

$\begin{array}{c}\text{Given, force applied}=10N\\ \text{square side}=50cm\\ \text{Stress}=\frac{F}{A}=\frac{10}{2500\times {10}^{-4}}=\frac{1000}{25}\\ =40N/m^2\end{array}$