Question

define radius of gyration and write its formula​

Answer 1

Answer:

Radius of gyration is the root mean square distance of particles from axis formula. Therefore, the radius of gyration of a body about a given axis may also be defined as the root mean square distance of the various particles of the body from the axis of rotation.

Explanation:

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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.