Bernoulli’s Principle

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Presentation transcript:

Bernoulli’s Principle

Objects move from high pressure to low pressure

What examples of this can you think of?

Pressure differences create a force which accelerates a fluid

Bernoulli’s Principle If speed of fluid is low, pressure is high If speed of fluid is high, pressure is low

Narrow sections of pipe lead to lower pressure and higher speeds

Applications: Air Plane Wing Two reasons for lift: Upward force from air hitting wing Lower pressure due to quicker moving air over wing (low pressure) and slower moving air under the wing (high pressure)

Applications: Carburetor As the air moves through the venturi, it speeds up This creates a low pressure area and the gas moves from a higher pressure in the gas tank to a lower pressure in the venturi Conclusion: Air and gas are mixed

Applications: Spray Can As the air moves through the plunger, it speeds up This creates a low pressure area and the paint moves from a higher pressure in the paint can to a lower pressure at the top of the tube

Work Pg 295 # 1,3,5a,6a,8 Pg 296 # 1