- #1

naj24

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Find the radii of gyration of a plane lamina in the shape of an ellipse of semimajor axis a, eccentricity E, about its major and minor axes, and about a third axis through one focus perpendicular to the plane.

I don't know where to start because I don't understand what gyration would look like to determine what the value of a radii would refer to (in a diagram for example.)