Question

Dimensions of stress are:

• A. $[ML{T}^{-2}]$
• B. $[M{L}^2{T}^{-2}]$
• C. $=\left[M{L}^{-1}{T}^{-2}\right]$
• D. $[M{L}^{-2}{T}^{-2}]$

Answer 1

Answer: (C)

We know that the formula for the stress is:
$\text{ stress }=\frac{\text{ F orce }}{\text{ Area }}$
$=\frac{\left[ML{T}^{-2}\right]}{\left[L^2\right]}$
$=\left[M{L}^{-1}{T}^{-2}\right]$