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Maximum radius of gyration (minimum slenderness ratio) can be obtained by(a) by increasing load(b) by spreading material of section towards its axis(c) by spreading material of section away from its axis(d) by spreading material of section at its axisThis question was addressed to me in a national level competition.My enquiry is from Effective Length and Slenderness Ratio of Compression Members topic in portion Design of Compression Members of Design of Steel Structures

Answer»

The CORRECT answer is (C) by spreading material of section away from its AXIS

To explain: MAXIMUM RADIUS of gyration is obtained when material of section is farthest from centroid i.e. away from its axis.



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