TOPIC 07-PRESSURE
Pressure is the force (f) acting normally per unit area (A).
i.e The word normally means perpendicular.
Mathematically;
The SI units of pressure are N/m2 or Pascal.
Example.
1.Find the pressure exerted when a force of 640N acts in the area of 16m2
Data:
Force (f) = 640N Area (A) =16m2 Pressure (p) =?
Solution:
Pressure=40 Pascal
2.A pressure of 75N/m2 is resulted from a certain force acting on an area of
0.8m2. Calculate its force acting on it.
Data:
Pressure = 75 N/m2
Area = 0.8m2 Force =?
Solution
F = PA
: F = 75N/m2ร0.8 m2
= 60N