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PASCAL’S PRINCIPLE.

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Presentation on theme: "PASCAL’S PRINCIPLE."— Presentation transcript:

1 PASCAL’S PRINCIPLE

2 Lets Review… What is pressure? What is the equation for pressure?
What causes fluid pressure? When you catch a deep-sea fish, why does its eyes pop-out? Why do your ears pop on an airplane or up in the mountains?

3 (This is the same as stating pressure is constant).
Pascal’s Principle When force is applied to a confined liquid, the change in pressure is transmitted equally to all parts of the fluid. (This is the same as stating pressure is constant). Draw a bottle of water with arrows to illustrate the regular exerted pressure. Then draw a water bottle that you squeeze. What happens to the pressure? What happens if you open the top? How does Pascal’s Principle explain what happens if you squeeze a water bottle?

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5 A force applied to one section of an enclosed liquid at rest will be transferred to the entire liquid with the same amount of force.

6 Force/Area = Pressure = Larger Force/Larger Area
Hydraulic Systems A force applied to one piston increases the fluid pressure throughout the fluid. If the second piston has a larger surface area, the force is multiplied! Pressure = Force/Area Force/Area = Pressure = Larger Force/Larger Area

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9 Suppose a force of 100 N is applied to a piston with a cross sectional area of m2.  What would be the force out (F2 ) if the size of the piston out was .01m2? 


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