Question

A solid circular shaft of diameter 'd' is subjected to a twisting moment T. The maximum shear stress in the shaft is proportional to

• A. $d^2$
• B. $d^2$
• C. $1/d^2$
• D. $1/d^3$

Answer 1

The correct option is D $1/d^3$

$f_s=\frac{16T}{\pi d^3}$

$Somaximumshearstrass\left(f_s\right)isproportionalto\frac{1}{d^3}$.