» Energy Methods
The displacements of loads in statically determinate frams can be found using ENERGY METHODS. This is done by setting the External Work equal to the Internal Energy.

External Work (W) = (External Force)(Displacement of External Force) 2 = P d 2 Internal Energy (U) = (Internal Force)2(Length) 2(Area)(Young's Modulus) = (Fi)2(Li) 2(Ai)(Ei)