Centroids and Moment of Inertia for composite figures

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Centroids and Moment of Inertia for
composite figures
Determine the centroids (x, ÿ) of the figure shown
below from the axes of reference (blue arrows)
Use the blue arrows as the axes of reference.
30
Take note that when the axis of reference is not at the end of the figure, the left
side / the downward side values must be negative using Varignon's Theorem.
Ex: in finding x from the set y-axis, the value of the centroids of individual figures
on the left is negative, while on the right side of the figure is positive.
R20
Determine the Moment of Inertia (Not Centroidal) of
the given figure (Ix)
20.
45
1. Determine x 2.0508, 4.4548,9.4548 , 7.0508
2. Determine y 42.6086 , 49.6088 ,22.3436 ,55.4436
9879988.8980 , 8887788.8980,
7998988.8980 , 8779988.8980
3. Determine Ix
Transcribed Image Text:Centroids and Moment of Inertia for composite figures Determine the centroids (x, ÿ) of the figure shown below from the axes of reference (blue arrows) Use the blue arrows as the axes of reference. 30 Take note that when the axis of reference is not at the end of the figure, the left side / the downward side values must be negative using Varignon's Theorem. Ex: in finding x from the set y-axis, the value of the centroids of individual figures on the left is negative, while on the right side of the figure is positive. R20 Determine the Moment of Inertia (Not Centroidal) of the given figure (Ix) 20. 45 1. Determine x 2.0508, 4.4548,9.4548 , 7.0508 2. Determine y 42.6086 , 49.6088 ,22.3436 ,55.4436 9879988.8980 , 8887788.8980, 7998988.8980 , 8779988.8980 3. Determine Ix
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