1. USING PASCAL’S PRINCIPLE
The Formula of Force
Pressure = Force / Area F P A

2. Pascal’s Principle
A change in pressure at any point in an enclosed fluid will be transmitted equally to all parts of that fluid.

3. Here’s How It Works 5N 2N 2 cm2 5 cm2 2N of force to each 2 cm2
P = F/A
P= 5N/5cm2
P= 1 pa 5N 2N
2 cm2
5 cm2
P = F/A
P= 2N/2cm2
P= 1 pa
2N of force to each 2 cm2

4. Let’s Give It A Try ? PRESSURE DOESN’T CHANGE!!!! P = F/A P = 2/2.5 2N
P = 0.8 pa ? 2N
5.2cm2
2.5 cm2
P = 0.8 pa
F = P x A
PRESSURE DOESN’T CHANGE!!!!
F = 0.8 x 5.2
F = 4.2 N

5. Devices that use liquids to transmit pressure from one point to another are called hydraulic devices.
Ex: brakes in car, earth movers
Brainpop on hydraulics

6. LET’S SEE HOW IT WORKS!