BC Transit – Air Brake Course

Using Compressed Air to Our Advantage...
Atmospheric Pressure
15 lbs./sq. in.
Suppose the walls of the room you are sitting in now, were to begin to squeeze
together evenly in all directions. Assume the room is sealed and no air can escape.
• What would happen to the atmospheric pressure as the size of the room began to
shrink?
•Would the pressure in the room begin to increase?
•Would the rate of increase be proportional to the reduction in the size of the room?
•What would the pressure be like in the “red” room?
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