THE FUNDAMENTALS OF FLUIDS
Fluids under pressure can exert forces that can be used to do work.
Fluids are used in pneumatic & hydraulic systems which such as in brakes,
hoists, dentist's chair, aeronautics, subs, the shipping industry, etc...
Some fluids can be compressed (gases) while others (liquids) can't.
FLUIDS can be liquids or gases.
AIR & WATER are impt. fluids to industries.
The viscosity of fluids varies. Eg. oil, water, syrup & ketchup have different viscosities.
Temperature affects a fluid's flow rate. Eg. Engine heat affecting oil or difficulty pouring cold syrup.
Usually, the greater the viscosity, the greater the density.
Density is defined as the mass per unit volume of a substance. Density = mass divided by volume.
Mass is the amount of matter in an object (kg or g).
Volume is the amount of space occupied by an object. It's measured in cubic units (cm3).
The viscosity & density of fluids affects objects placed in those liquids. A
buoyant force is the upward force on objects submerged in fluids.
An object might float when normally gravity sink it. (Try floating an egg)