Engineering, 21.10.2020 17:01 gapaxton22
Estimate the rotor inertia assuming that the rotor is a cylinder of radius 8.98 mm, and length 25 mm, with a material of 100% copper. Explain why the rotor inertia may differ from these assumptions?
Answers: 2
kilogram-square meters.
, length 
, made of cooper (
) and whose axis of rotation passes through its center of mass and is parallel to its cross section. By definition of Moment of Inertia and Theorem of Parallel Axes, the moment of inertia of the rotot is:
(Eq. 1)
- Density of copper, measured in kilograms per cubic meter.
- Radius of the rotor, measured in meters. 
- Length of the rotor, measured in meters.
- Moment of inertia, measured in kilogram-square meters.
and 
, the estimated moment of inertia of the rotor is:![I = \frac{\pi}{16}\cdot \left(8960\,\frac{kg}{m^{3}} \right)\cdot (8.98\times 10^{-3}\,m)^{3}\cdot [3\cdot (8.98\times 10^{-3}\,m)^{2}+(25\times 10^{-3}\,m)^{2}]](/tpl/images/0827/8885/9bd97.png)
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Estimate the rotor inertia assuming that the rotor is a cylinder of radius 8.98 mm, and length 25 mm...
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