1 / 10

Chapter 11 Notes

Chapter 11 Notes . Section 1 - Pressure. Pressure - equal to the force exerted on a surface divided by the total area over which the force is exerted. Pressure = force/area pressure units = pascal increase surface area, decrease pressure ice skates

Anita
Télécharger la présentation

Chapter 11 Notes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 11 Notes

  2. Section 1 - Pressure • Pressure - equal to the force exerted on a surface divided by the total area over which the force is exerted. • Pressure = force/area • pressure units = pascal • increase surface area, decrease pressure • ice skates • fluid - substance which can easily flow Chapter 11

  3. All of the forces exerted by the individual molecules in a fluid add together to make up the pressure exerted by the fluid. • Balanced pressure - air pressure • pressure at a given level in a fluid is the same in all directions • air pressure decreases as elevation increases • water pressure increases as depth increases Chapter 11

  4. Section 2 - Transmitting Pressure in a Fluid • Pascal’s principle - When force is applied to a confined fluid, an increase in pressure is transmitted equally to all parts of the fluid. Chapter 11

  5. Hydraulic System • Multiplies a force by applying the force to a small surface area. • The increase in pressure is then transmitted to another part of the confined fluid, which pushes on a larger surface area. • Small force over small area results in a larger force exerted by a larger area at another place. • Car brakes, repair shop lift, fire truck ladder Chapter 11

  6. Section 3 - Floating and Sinking • Buoyant force - acts in an upward direction, against the force of gravity. • Makes an object feel lighter • Archimedes’ principle - the buoyant force on an object is equal to the weight of the fluid displaced by the object • floating and sinking - pg. 362 Chapter 11

  7. density = mass/volume units g/mL or g/cm3 • water density = 1 g/mL pg.363 Chapter 11

  8. Section 4 - Applying Bernoulli’s Principle • Wright brothers Chapter 11

  9. Bernoulli’s principle • The pressure exerted by a moving stream of fluid is less than the pressure of the surrounding fluid. • Air moves at different speeds above and below objects. • Difference in pressure causes lift or downward force • wings pg. 367 Chapter 11

  10. Chapter 11 - Vocabulary List • Pressure • Pascal’s principle • hydraulic system • buoyant force • Archimedes’ principle • Bernoulli’s principle Chapter 11

More Related