Pressure 1 Force & Pressure Objective: Define & calculate pressure and distinguish from force. F A P= Pressure measures how much force is distributed over a certain area. Force & Pressure Units: N/m 2 or Pascal (Pa), psi - lbs/in 2 Ex. water pressure, air pressure A = .5 cm 2 F A = 10 N A = .01 cm 2 F A = 10 N Pressure Examples A = .01 cm 2 P = F = 700 N A .01 cm 2 P = 70,000 N/cm 2 Pressure Example A = .01 cm 2 P = F = 700 N A .01 cm 2 3 P = 23,333.3 N/cm 2 Pressure Example Bed of Nails