Which of the following is correct?(a) Radius of gyration K = (I/A)^0.5(b) Radius of gyration K = (I/A)^0.8(c) Radius of gyration K = (I/A)*0.2(d) Radius of gyration K = (I/A)*0.8The question was posed to me during an internship interview.My question comes from Structural-Analysis Fundamentals topic in chapter Structures and Loads of Aircraft Design

Which of the following is correct?(a) Radius of gyration K = (I/A)^0.5

1.	Which of the following is correct?(a) Radius of gyration K = (I/A)^0.5(b) Radius of gyration K = (I/A)^0.8(c) Radius of gyration K = (I/A)0.2(d) Radius of gyration K = (I/A)0.8The question was posed to me during an internship interview.My question comes from Structural-Analysis Fundamentals topic in chapter Structures and Loads of Aircraft Design
Answer» RIGHT option is (a) Radius of gyration K = (I/A)^0.5 To explain I WOULD say: Above relationship is used to correlate radius of gyration K with moment of INERTIA I and cross section AREA A. Correct relationship is given by, radius of gyration K=(I/A)^0.5 where, I = moment of inertia and A is the cross section area.

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