Start here
the first steps into statics018 min
Force vectors
Why two 100 N pulls on the same bracket can add to 200 N, to nothing at all, or to anything in between.
029 min
Equilibrium of a particle
Equilibrium is not the absence of force. It is cancellation, and cancellation has to be proved one component at a time.
0310 min
Free-body diagrams
The diagram decides which forces exist. Everything after it is arithmetic, and arithmetic cannot rescue a bad diagram.
Browse by path
every subject, arranged as a syllabusStatics
16 topicsHow forces balance on things that don't move — vectors, free-body diagrams, trusses, and the internal loads holding it all together.
0 / 16 understood0%
Force VectorsEquilibrium of a ParticleFree-Body Diagrams+13 more
Thermodynamics
16 topicsEnergy, heat, and the laws that decide which processes are possible at all.
0 / 16 understood0%
Basic Concepts and DefinitionsProperties of Pure SubstancesIdeal and Real Gases+13 more
Fluid Mechanics
16 topicsPressure, flow and drag — the mechanics of anything that can't hold its own shape.
0 / 16 understood0%
Fluid PropertiesPressure and Fluid StaticsHydrostatic Forces on Surfaces+13 more