When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
By Keith Alexander Seffen. Author Keith Alexander Seffen. Part I. Simple Structures: 1. Mastering Friction; 2. Simple Cables; Part II. Virtual Work for Trusses; 6. Why Does the Lower Bound Theorem Work?.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.