Chapter 7 Section 5

[Jordan Turner]

Hello

I would like to start by expressing my appreciation for this textbook as it has served as a reliable extra resource during my studies of statics this semester.

I want to point out an irregularity, or mistake I've found in Chapter 7 Section 5 Example 7.5.3 of Engineering Statics. In the equations at the bottom used for calculating the center of gravity of the object, the equations and the units are incorrect. I have attached a screenshot of the relevant example for reference. 

Thanks for the awesome textbook.

Kind regards

Jordan

[Turner, Jamie L]

Good catch!  For the exams/HW, I've been using CAD software to check answers - for InventorPro it is iproperties, or AutoCAD it is mass properties - it will calculate center of mass, moment of inertias etc.

↑ the x,y,z's are oriented differently but #'s match calculations (had to use uniform density).  CAD software is free for students to download, so I think counts as OER?

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[William Haynes]

Jordan,

Thanks for pointing this out!  I’ve fixed the example and uploaded the the corrections.

https://github.com/dantheboatman/EngineeringStatics/commit/86d143dc04997c3526a160c13118aa7a96a7ca04