101 : 5: ...

1. Pressure = Force per unit Area P = F /A ??? 101 : ?????? ??? 5:??????? ??????? (?????...)

2. Show Newton�s Apple. A Newton is a small force equal to about the weight of a small apple. A square meter is an area that is equal to the area of a square one meter on a side. A Pascal is the pressure due to a force of 1 N applied over an area of 1 square meter.Show Newton�s Apple. A Newton is a small force equal to about the weight of a small apple. A square meter is an area that is equal to the area of a square one meter on a side. A Pascal is the pressure due to a force of 1 N applied over an area of 1 square meter.

3. The atmosphere sits on top of you pressing down. Normally the atmosphere (equivalent to a little over 5 miles of air, if as density as at the surface.) exerts apressure of about 100 kPa or 15 pounds per square inch. Tires are pressurized with air to pressures of a few atmospheres (above the ambient) or A few 100 kPa.The atmosphere sits on top of you pressing down. Normally the atmosphere (equivalent to a little over 5 miles of air, if as density as at the surface.) exerts apressure of about 100 kPa or 15 pounds per square inch. Tires are pressurized with air to pressures of a few atmospheres (above the ambient) or A few 100 kPa.

5. Which applies the greatest pressure on their foot? Man. Elephant. Woman.

6. DEMONSTRATION: NEWTON�S SCALE Consider the pressure exerted on the ground by the feet of a 200 pound man, a 2 ton elephant and a 100 pound woman. Which exerts the most, and the least pressure. Guess? PEER INSTRUCTION Vote for most and least. Analyze. p=F/A Elephant, woman, man.DEMONSTRATION: NEWTON�S SCALE Consider the pressure exerted on the ground by the feet of a 200 pound man, a 2 ton elephant and a 100 pound woman. Which exerts the most, and the least pressure. Guess? PEER INSTRUCTION Vote for most and least. Analyze. p=F/A Elephant, woman, man.

7. Conclusion: about 150% force on woman�s feet when wearing high heels. Possible physiological consequences? What if the woman stands on her heel only, as when she walks? p = F/A Much smaller area, therefore much larger force. About 14x elephant. Consequence: dented tile, perforated foot if she steps on you.Conclusion: about 150% force on woman�s feet when wearing high heels. Possible physiological consequences? What if the woman stands on her heel only, as when she walks? p = F/A Much smaller area, therefore much larger force. About 14x elephant. Consequence: dented tile, perforated foot if she steps on you.

8. Pressure = Force per unit Area p = F /A Pressure = Force/area CLICK for graphic. Larger area for same for ce means lower pressure.Pressure = Force/area CLICK for graphic. Larger area for same for ce means lower pressure.

9. Hydrostatic Pressure is due to weight of fluid above:

10. the forces of pressure acting on an immersed body, immobile, admit a consequence named ``pushed of archim�de``, its support passes by the center of inertia of the set of the replaced fluids, it is vertical from bottom to the top and its module is equal to the total weight of the fluids replaced ??? 101 : ?????? ??? 5:??????? ??????? (?????...)

11. ?? ????? ??? ????? ???? ???? ??? ??? ???? ?? ???? ????? ??? ???? ??? ???? ??? ???? ???? ??????? ?? ????? ???????. ????? ??? ????? ??? ???? ?????? ? ?? ????? ??? ?????? ? ?? ?????? ??? ????? ????? ?????? ???????. ??? 101 : ?????? ??? 5:??????? ??????? (?????...)

12. Continuity

13. Summary: Pressure is the force per unit area. P =F/A  Unit of pressue [Pacal] = [N]/[m2] The hydrostatic pressure is P = Po + ?gh Archimedes� Principle: Fbouyant = ?fluid g V Equation of Continuity: A1v1 = A2v2  Bernoulli�s Equation: P + � ?v2 + ?gy = constant.