Correct Answer - Option 4 : 180
Explanation:
- Compression members fail under buckling.
- The buckling of a member depends upon its slenderness ratio.
- Slenderness ratio is defined as the ratio of the effective length of a column to the least radius of gyration of its cross-section.
- S.R= (KL/r) where KL= Effective length of the column
- r = Radius of gyration
- The radius of gyration of a body about an axis of rotation is defined as the radial distance to a point that would have a moment of inertia the same as the body's actual distribution of mass if the total mass of the body were concentrated.
As it is given the strut is loaded.
Generally, the strut is a compression member. So maximum slenderness ratio is 180 which can be obtained from the above table.
