§2-1 Preface Fluid statics researches the mechanics rules and applications of Equilibrium fluids a. fluids have not relative motion The relative Equilibrium to the earth Equilibrium to the b. Fluids have not relative motion coordinate system to the moving container There are not relative motion among the Equilibrium fluids and fluids do not appear having viscosity. The static pressure in the normal direction is the only surface force acting on fluids Main tasks in this chapter: Research distributed regulations of fluid static pressure in space, the total pressure acts on the fixed wall( such as planes or curved surfaces), etc. Moreover solve some factual engineering questions basing on this5 §2-1 Preface Fluid statics researches the mechanics rules and applications of Equilibrium fluids. Equilibrium  a. Fluids have not relative motion to the earth b. Fluids have not relative motion to the moving container.  The relative Equilibrium to the coordinate system. There are not relative motion among the Equilibrium fluids and fluids do not appear having viscosity. The static pressure in the normal direction is the only surface force acting on fluids. Main tasks in this chapter: Research distributed regulations of fluid static pressure in space , the total pressure acts on the fixed wall( such as planes or curved surfaces) , etc. Moreover solve some factual engineering questions basing on this