Moment of inertia of triangular section derivation
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- We will have to determine the moment of inertia for the triangular section about axis XX which is passing through the center of gravity and parallel to the base of the triangular section. We have already derived the moment of inertia of the triangular section about its base and it will be as mentioned here.
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Moment of inertia is the name given to rotational inertia, the rotational analog of mass for linear motion. It appears in the relationships for the dynamics of rotational motion. The moment of inertia must be specified with respect to a chosen axis of rotation. For a point mass, the moment of inertia is just the mass times the square of perpendicular distance to the rotation axis, I = mr2. That point mass relationship becomes the basis for all other moments of inertia since any object can be built up from a collection of point masses.
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