Chapter 15 Fluid Mechanics. Density Example Find the density of an 4g mass with a volume of 2cm 3.

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Chapter 15 Fluid Mechanics

Transcript of Chapter 15 Fluid Mechanics. Density Example Find the density of an 4g mass with a volume of 2cm 3.

Page 1: Chapter 15 Fluid Mechanics. Density Example Find the density of an 4g mass with a volume of 2cm 3.

Chapter 15

Fluid Mechanics

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Density

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ExampleFind the density of an 4g mass with a volume of 2cm3.

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Pressure

For force uniform over the surface:

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More on the Units of Pressure 1

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More on the Units of Pressure 2

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Convert atm to mmHg

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Pressure from WeightThe deeper you go, the more fluid you have above your head, the heavier it is, the higher the pressure on you.

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Static Fluid

The pressure in the static case depends ONLY on the depth. The shape of the container does not matter.

Pascal’s Law:Pressure is transmitted undiminished to everywhere in the fluid.

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Hydraulic Lift

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Buoyancy: Archimedes’ Principle

A fluid exerts an upward force on the body equal to the weight of the fluid displaced.

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Archimedes’ Principle

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Archimedes’ Principle

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Dead Sea (very salty!)

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Archimedes’ Principle: Explanation

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Weight of Gold in WaterThe gold statue weighs 147N. Find the buoyant force and the weight of the statue in water.

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Finding Density

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Finding Density (Alternative Method)

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Incompressible Fluid Flow

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Bernoulli’s Equation

Usually used this way:

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A Leaky Tank

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Applications

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Bunsen Burner

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Air Multiplier & Eductor

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Curve Ball

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Viscosity

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Turbulence vs Laminar Flow