1. Chapter 3 Section 1
“Pressure”
Pages

2. What is pressure? Related to the word press
A force pushing on a surface
Examples….
Walking in deep snow

3. What does distribution of weight mean?
The greater the area that weight is distributed the lower the pressure.

4. How can we tell the difference between force and pressure?

5. Pressure = Force / Area
Pressure is equal to the force exerted on a service divided by the total area over which the force is exerted

6. When an are is measured in square meters…
The unit of pressure is N/M2
Or called pascal (Pa)
1 N/M2 = 1 Pa

7. Try this…
A solid block of wood has a square base 1m X 1m and weighs 5,000 N. How much pressure does it excerpt on the floor underneath.