Therefore, a column will always flex about the axis with the lower second moment of area, or the "weaker" axis, for a given cross-section. This presupposes equal restraint on both axes.
<h3>Which axis, major or minor, is longer?</h3>
Two axes of symmetry exist in every ellipse. The main axis, which is the longer of the two, and the minor axis, which is the shorter, are referred to as such. The ellipse's vertex, or vertices, are each of the main axis' endpoints, and its co-vertex is each of the minor axis' endpoints.
<h3>What does the phrase "semi-minor axis" mean?</h3>
A line segment with one end at the center of the conic section is called the semi-minor axis (minor semiaxis) of an ellipse or a hyperbola. It forms a right angle with the semi-major axis. The lengths of the semi-axes are same for the special case of a circle, being the circle's radius.
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