Fourth year of secondary education
Pressure (I)
E. Vallo - J.Villasuso
 Pressure
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Problems 3 / 9


3.- Knowing that the circular hatch of a submarine measures 1 m in diameter and that the density of sea water is 1030 kg/m3, calculate the force which the hatch supports when the submarine is submerged to a depth of 50 m.

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a) p=504700 Pa; b) F=396190 N
 
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What is pressure? How does it work?
Units
Hydrostatic pressure
Mathematical expression
The pressure increases the deeper you go in liquids
Which goes the furthest?
A little goes a long way!
Communicating vessels
Syphons
Pascal's Law
The Law
The hydraulic press
Hydraulic brakes: drum brakes
Manometers
Problems
Evaluation