Question

What is radius if gyration ? ​

Answer 1

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RADIUS OF GYRATION

Radius of gyration is defined as the distance from the axis of rotation to a point where the total mass of the body is supposed to be concentrated, so that the moment of inertia about the axis may remain the same

The centre of mass of a body is point where the entire mass of the body is supposed to be concentrated. It is denoted by 'K '. So, the formula for radius of gyration (K) is given as, where K = radius of gyration, I = Moment of inertia and M = mass of the body.

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Answer 2

Answer:

Radius of gyration or gyradius of a body about an axis of rotation is defined as the radial distance of a point ,from the axis of rotation at which, if whole mass of the body is assumed to be concentrated, its moment of inertia about the given axis would be the same as with its actual distribution of mass.

The radius of gyration is used to compare how various structural shapes will behave under compression along an axis. It is used to predict buckling in a compression beam or member.