1. Pressure Gauge

2. Pascal’s Principle
Increases in pressure are distributed equally throughout a fluid (walls, sides, bottom)
Pressures a scalar quantity (non-directional)

3. Pascal’s Principle Hydraulic lift F1 W p2A2 p1A1
P1 = P2  W/A2 = F1/A1  F1 = W(A1/A2) 1

4. Pascal’s Principle.
A machine using Pascal’s Principle……

5. Pascal’s Principle

6. Pascal’s Principle

11. wghw+ Po = xghx + Po  w h w=  x h x
First, pressure depends on depth alone, do you can draw a line of equal pressure at a convenient point of known depth and write an equation showing Pw = Px
Pw = Px
wghw+ Po = xghx + Po
Canceling terms……..
 w h w=  x h x
Find the density of the unknown fluid x if h w= 10 cm and h x = 15 cm

12. Find the density of the unknown fluid x if h w= 10 cm and h x = 15 cm

13. Specific Gravity For sinkers only :
SG = Weight of object in air / apparent weight lost in water
For floaters only :
SG = % sunk