2. Archimedes Principle
Greek mathematician
Found that buoyant force on an object is equal to the weight of the fluid displaced by the object

3. Why do ships float?
A greater force pushing up on the ship opposes the weight or force, of the ship pushing down
Buoyancy- is the ability of a fluid to exert an upward force on an object immersed in it

4. Viscosity The resistance to flow by a fluid
If flowing particles do not effectively pull other particles causing them to flow then high viscosity or high resistance to flow
Water vs. syrup

5. Density
An object will float if its density is less than the density of the fluid it is placed in

6. Pascal’s Principle Pressure is force per unit area
Blaise Pascal- a French scientist
Pressure applied to a fluid is transmitted throughout the fluid.
For example, when you squeeze one end of the toothpaste tube, toothpaste emerges from the other end, the pressure has been transmitted

7. Applying Pascal’s Principle
More force is available to lift a heavy load by increasing the surface area
Hydraulic lift
P=F/A
F= ma
measured in Pascals (Pa)

8. Bernoulli’s principle
Daniel Bernoulli: Swiss scientist
As the velocity of a fluid increases, the pressure exerted by the fluid decreases
Airplane wings- air passing over the top of the wing moves faster than the air below it, pressure above wing is less- this results in a net upward force on the wing, which contributes to the lift of an airplane wing

9. Boyle’s Law
Decrease volume, increase pressure- at constant temperature
P1V1=P2V2

10. Charles’ Law
Volume of a gas increases with increasing temperature- as long as pressure doesn’t change
V1/T1=V2/T2