Question

A steel column of rectangular section $(15mm\times 10mm)$ and length 1.5 m is simply supported at both ends. Assuming modulus of elasticity, E= 200 GPa for steel, the critical axial load (in kN) is _____ ( correct to two decimal places)

• A. 1.097

Answer 1

The correct option is A 1.097
$Bucklingload=\frac{{\pi }^{2}E{I}_{min}}{L^2}$

$=\frac{{\pi }^2\times 200\times {10}^3\times \frac{15\times {10}^3}{12}}{{1500}^2}$

$=1096.62N=1.097kN$