column with alone in hinged and both end fixed as a length of Sm and diameter hallow circular section of outer $100$mm and wall thickness $10$mm if E$=1\mathrm{.}60$x$105$ N$/$mm$^2$ and $($rosing strength $=350$ N$/$mm$^2$ Find the load that the column may carry with a factor of safty with $2\mathrm{.}5.$ According to Eular's theory $2$ Rankino's theory. If the column is hinged on both the end. Find the safe load according to the theorys.