c) Pressure in fluids
c) p = hρg; upthrust on an object in a fluid; Archimedes’ principle
fluids always exert pressure on submerged objects
the pressure exerted by a fluid on an object acts in all directions perpendicular to surface of the object
p = hρg
pressure exerted by a vertical column of liquid (Pa) = height of the column of liquid (m) × density of the liquid (kgm-3) × acceleration of free fall (ms-2)