http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Introduction; Vectors; Forces; Systems of forces and moments; Objects in equilibrium; Structures in equilibrium; Centroids and centres of mass; Moments of inertia; Distributed forces; Friction; Virtual work and potential energy.
Anthony Bedford and Wallace Fowler ; adapted by Eddie Morris.