Introduction, part 2 of 2: Let's define units so the fundamental quantities (distance, time, mass, and force) may be used in real life!
Here we look at the foot, meter, second, slug, gram, pound-mass, pound-force, and newton (ft, m, s, slug, g, lbm, lbf, and N.) For example, we will answer "what is the difference between a pound-mass and a slug?" These units add real-life meaning to the fundamental quantities of distance, time, mass, and force.
Textbook: "Mechanical PE Exam Review: Machine Design and Materials," by Dr. Timothy Kennedy, used with permission. 2017. (ISBN# 978-1545055892.)
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