As a safety measure laboratory rooms are typically kept at a

As a safety measure, laboratory rooms are typically kept at a slight vacuum pressure. This is done to contain any potential contaminants within the lab. If the vacuum pressure in the room is 0.20 kPa, what is the net force exerted on the lab door, if its dimensions are 3.5 by 6.5 feet?

Solution

Area of the door = 3.5feet*6.5feet = 1.067m*1.98m = 2.11m²

Force = Pressure* Area = .2kPa*2.11m² = 422.5N