A 2.5-in diameter steel bar is used as an axially loaded pin-connected compression member. The ASTM A36 structural steel has a proportional limit of 36,000 psi and a modulus of elasticity of 29,000,000 psi. Complete the following:
Part A (1 points): Find the moment of inertia of the column.
Part B (1 points): Find the cross-sectional area of the column.
Part C (1 points): Find the radius of gyration of the column.
Part D : Calculate the shortest length for which Euler's formula applies.
Part E : Calculate the critical load if L = 84 in.
Part F : Calculate the critical stress if L = 84 in.