3. Given: Structure shown below Find: (1) Orientation of the principal axes having an origin at C and (2) principal moments of inertia about these axes using Mohr's circle 20 mm 32.22 mm 100 mm 32.22 mm C 20 mm 100 mm

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Moment of Inertia

Inertia can be termed as a resistance offered by a body to change its state. A rigid body initially at rest will apply resistance when acted by an external force that tends to change its state of rest or velocity, or a body initially at motion will provide resistance in changing its state of velocity or motion for coming to a state of rest. In other words, Newton's first law of motion describes the law of inertia of a rigid body.