Determine the moments of inertia of the Z-section about its centroidal xo- and yo-axes. 19 mm Answers: Ix Iyo = = 165 mm i +115 mm i -xo 19 mm 115 mm- 19 mm (106) mm² (106) mm4

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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.