HigherEd 2.0

I know…it’s like looking into the future. Somehow this lecture is posted to the web before it’s even been delivered. It’s kind of important–it introduces the notion of torsion and something called the torsion formula, which we will use repeatedly throughout the semester. The derivation of the relationship between the twist angle φ(x) and the shear strain γ is given in (I think) very improved form over the book (pp. 191-193). Here, I use some colors to annotate and explain Figures 5-1 through 5-3. Anyway, enjoy and be ready to extend this material on Wednesday.

 

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