Notes From December 1st

A **fluid** is a material that flows like liquids and gases

**Pressure** is the measure of the force acting perpendicular to a unit area.

**The Formula**: P = F/A

- Force (F) is measured in Newtons
- Area(A) is measured in $m^2$

Units of pressure: (from the formula N/m2) **Pa (pascals)**, kPa (kilopascals), 1kPa = 1000Pa

- Instead of using two units, scientists decided to invent one unit to denote this relationship: Pa - after a well known scientist Pascal.

If force increases —> pressure increases

If area increases —> pressure decreases

The pressure of fluids is exerted in all directions equally.

page revision: 0, last edited: 01 Dec 2008 19:21