A dictionary of architecture and building : biographical, historical, and descriptive . Moldavia, Architecture of: Fig. 5. —Wooden Church at Klokuczka. 919 920 MOMENT OF INERTIA of a lever arm, to which it is apiiliud, theaction of the force being consiilereil with refer-ence to a given point. The lever arm is thedistance from the given point measured perpen-ditndarly tii the direetion of the force. Bending Moment. In tiie consideration ofthe strains j)roduced in a loaded beam, the sumof the moments acting on one si<le of an) sec-tion perpendicidar to the neutral axis, the posi-tion of such
A dictionary of architecture and building : biographical, historical, and descriptive . Moldavia, Architecture of: Fig. 5. —Wooden Church at Klokuczka. 919 920 MOMENT OF INERTIA of a lever arm, to which it is apiiliud, theaction of the force being consiilereil with refer-ence to a given point. The lever arm is thedistance from the given point measured perpen-ditndarly tii the direetion of the force. Bending Moment. In tiie consideration ofthe strains j)roduced in a loaded beam, the sumof the moments acting on one si<le of an) sec-tion perpendicidar to the neutral axis, the posi-tion of such section being assumed at ])leasurefor the purpose of investigation of the strainsat any part of the beam. The bending momentis equal to the Couple formed by the sum ofthe forces pro(kicing tension and of those pro-ducing compression, on opposite sides of theneutral axis, , Architecturf. of: Fia. ti. — WindowIN Church at Rad.^utz, showing Influence, as of the 15th CenturyGothic of Germany. MOMENT OF INERTIA. A fiuantity inconstant use in computing the strength anddeflection of a beam or a column. It is wellknown that when a beam is bent the fibres onthe concave side are compressed, and on theconvex side, extended, tliough all are not equallyextended or compressed. If we suppose the sec-tion of a beam or of a column to be divided intoinfinitely small areas, and each area multipliedby the square of its distance from a line ])assingthrough the centre of gravity of the section, the921 MONASTIC ARCHITECTURE sum of these products is the moment of inertiaof the section, and, when multiplied by thestrength of the fibre, represents the sum of theresistance of the dirterent fibres to stress. Thesquare of the radius of gyration, l~, is the mo-ment of inertia divided l)y the area of the sec-tion. It is the sum of the .si|uares of thedistan
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