To find the combined mass of several objects, we simply add their masses. The sa

Question

To find the combined mass of several objects, we simply add their masses. The same is true for the moment of inertia. Consider a platform (solid disk or cylinder) of mass 1.32 kg and radius 0.550 m which is rotating about its center. There are two objects placed on it. Treat these two objects as point objects. Object A has a mass of 1.65 kg and sits a distance 0.402 m from the axis of rotation. Object B has a mass of 1.17 kg and sits a distance 0.198 m from the axis of rotation. 1.) What is the moment of inertia of the platform? 2.)What is the moment of inertia of Object A? 3.)What is the moment of inertia of Object B? 4.)What is the combined moment of inertia of all three objects?

Explanation / Answer

1)1.32*0.55*0.55/2 2)1.65*0.402^2 3)1.17*0.198^2 4)1+2+3

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