Fourth year of secondary education
Pressure (I)
E. Vallo - J.Villasuso
 Pressure
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Problems 4 / 9

4.- The piston of a hydraulic car jack has a diameter of 32 cm. Calculate the pressure needed to lift a car weighing 1000 kg.
NB. Do the exercise in your notebook. To see the solutions drag the mouse over the "solutions" control. Drag the mouse over the drawing. Calculate the value of the pressure using the computer's calculator and compare your calculations with the ones you see when you click on the "answer" control. 

122500Pa  

 

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