pressure

1. Outline
   1. Curriculum standards required pressure is very simple, beginning with the introduction of non-free surface and more liquid, more difficult
2. Solid pressure
   1. official
      1. Main formula: $ p = \ frac {F} {S} $
      2. Column has $ p = \ rho gh $
   2. Cutting issues
      1. 
   3. Pyramid
      1. Note that the contact surface always take a small
3. Liquid pressure
   1. official
      1. The main formula: $ p = \ rho g h $
      2. A cylindrical container having $ p = \ frac {F} {S} $
   2. Beaker glass tube
      1. Just off the hat: equilibrium pressure, the liquid continues to maintain the original state, the liquid density ratio of the two calculated
         

      2. Release: no matter how much liquid can not put off the cover sheet, because the glass density greater than the density of the external liquid
          

      3. Flasks liquid may cause a small pressure balance (10g $ $ $ liquid play the role of $ weights 100g)
         
4. Gas pressure