How to find moment of inertia of rectangle with a hole?
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The Rectangular Area Moment of Inertia. The Second Moment Integral, often just called the Moment of Inertia, can be useful in engineering mechanics calculations for a number of reasons. For example: The Second Rectangular Area Moment of Inertia of a beam's cross section represents that beams resistance to bending.
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Rotational inertia is important in almost all physics problems that involve mass in rotational motion. It is used to calculate angular momentum and allows us to explain (via conservation of angular momentum) how rotational motion changes when the distribution of mass changes.
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