1. Topic 4: Force, Pressure, and Area

2. Vocabulary Words Area Pressure Pascal’s law Hydraulic lift
Closed system

3. Topic 4: Force, Pressure, and Area
P=F/A
Force is measured in Newton's (N)
Area is measured in square metres (m2)
Pressure is measured in Pascals (Pa)
1000 Pa = 1 kPa

4. Calculating Pressure…practice
Calculate the pressure exerted on 16m2 with 6N of force applied.
What happens to the pressure when the area is reduced to 8 m2 or increased to 32 m2
How many N are required to create 150Pa of pressure on 5m2? What about 1m2? What about 10m2?
Fill in these blanks:
When the area increases, the pressure ___________. When the area decreases, the pressure ___________.
When the area increases, the force required ___________. When the area decreases, the force required ___________.

5. Pascal’s Law
Pressure exerted on a contained fluid is transmitted undiminished in all directions throughout the fluid and perpendicular to the walls in the container.

6. Hydraulic Lift
A mechanical system that raises heavy objects, such as vehicles at a service station.
Uses a fluid under pressure in a closed system. (closed- system is a self-contained collection of parts)