Fourth year of secondary education
Pressure (I)
E. Vallo - J.Villasuso
 Pressure
Print
Problems 8 / 9

8.- What is the minimum force which we have to exert to open the door of a car which has had an accident and is submerged in the sea at a depth of 5 m? Data: The surface area of the door is 1 m2 and the density of sea water is 1030 kg/m3.

NB. To see the solutions drag the mouse over the "solutions" control. Try to solve it before clicking on "Answer" and then click and check your result. 

50400 N  

 


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