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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/m2 or Pascal (Pa), psi - lbs/in2
Ex. water pressure, air pressure
A = .5 cm2
FA = 10 N
A = .01 cm2
FA = 10 N
Pressure Examples
A = .01 cm2
P = F = 700 NA .01 cm2
P = 70,000 N/cm2
Pressure Example
A = .01 cm2
P = F = 700 NA .01 cm2 3
P = 23,333.3 N/cm2
Pressure Example Bed of Nails
Pressure
2
Bed of Nails Assignments . . .
Chapter 4 HW #2224