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Centroid and moment of inertia12/31/2023 Sol: The given plate is symmetrical about the y-y axis, therefore \ = 150 mm. Calculating Moment Of Inertia There are several ways to calculate the moment of inertia of a rotating object. To find \, we have to divide the whole Figure into standard areas.Įxample: Find the moment of inertia of a plate with a circular hole about its centroidal x axis as shown in Fig.8. Sol: The given I-section is symmetrical about the y-y axis, therefore, Moment of Inertia is the integration of the square of the distance of the centroid and the del area along the whole area of the structure. = + Įxample: Determine the moment of inertia about the horizontal axis passing through the centroid of the section as shown in Fig.7.
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