A 4m long solid round bar is used as a column having one end fixed and the other end free. IfEuler?s

A 4m long solid round bar is used as a column having one end fixed and the other end free. IfEuler?s critical load on this column is found as 10kN and E=210 GPa for the material of thebar, the diameter of the bar isIf a thin-walled cylinder with closed hemispherical ends with thickness 12mm and insidediameter of 1250 mm is to withstand a pressure of 1.5MPa, then the maximum shear stressinduced is