Fluid Mechanics

Solid

• rigid molecules, fixed shape, fixed volume

• not rigid molecules, not fixed shape, fixed volume

• not rigid molecules, not fixed shape, not fixed volume

Liquid

• not rigid molecules, not fixed shape, not fixed volume

• rigid molecules, fixed shape, not fixed volume

• rigid molecules, not fixed shape, not fixed volume

• not rigid molecules, not fixed shape, fixed volume

Gas

• not rigid molecules, not fixed shape, not fixed volume

• rigid molecules, fixed shape, not fixed volume

• not rigid molecules, not fixed shape, fixed volume

________ are gases and liquids, which can have no definite size and shape, so they flow freely.

• Fluids

• Fluid statics

• Fluid dynamics

• Solid

Study of the properties of fluids at rest

• Fluid Statics

• Fluid Dynamics

Study of the properties of fluids in motion

• Fluid statics

• Fluid dynamics

• Hydrodynamics

A scalar quantity defined as the ratio of mass per unit volume

• Density

• Pressure

• Specific Gravity

• Relative Density

Ratio of the density of a substance to that of water

• Pressure

• Gravity

• Specific Density

• Specific Gravity

________ at a point within a fluid is defined as the ratio of the force acting perpendicular to a small element of surface area at that point.

• Pressure

• Density

• Statics

• Magnitude

"Pressure applied to an enclosed fluid is transmitted undiminished to every portion of the fluid and the walls of the containing vessel.”

• Pascal's Principle

• Archimedes' Principle of Buoyancy