1.8

• pressure - force per unit area
• unit of pressure - pascal

  1 N/m^2
• pressure in a liquid increases with depth
• pressure at one depth acts equally in all directions
• a liquid finds its own level
• pressure depends on the density of the liquid
• F = f/a x A

  F = f x A/a
• hydraulic jack - has a platform on top of piston B and is used in garages to lift cars
• Hydraulic car brakes - when the brake pedal is pushed, the piston in the master cylinder exerts a force on the brake fluid and the resulting pressure is transmitted equally to eight other pistons. these force the brake shoes or pads against the wheels stop the car
• pressure = density x g x depth of the liquid