1 / 59

What is Buoyancy? not easy

What is Buoyancy? not easy. bonaire diving movie good reason to know about buoyancy reason why I dislike sailboats understanding buoyancy slammed by waves. Boat challenge Cardboard ship Boats float COOL BOATS pretty cool waves.

comacho
Download Presentation

What is Buoyancy? not easy

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. What is Buoyancy?not easy

  2. bonaire diving • movie • good reason to know about buoyancy • reason why I dislike sailboats • understanding buoyancy • slammed by waves

  3. Boat challenge • Cardboard ship • Boats float • COOL BOATS • pretty cool waves

  4. The strength of the buoyant force on an object in water depends on the volume of the object that is underwater. As you keep pushing downward on the ball, the buoyant force gets stronger and stronger.

  5. Buoyancy

  6. WATER PRESSURE ON BALL

  7. FREE DIVE blue hole dive 4.3 min Tanya free dive CRAZY

  8. Buoyant force of an object is equal to the weight of fluid displaced by the object • Increased pressure causes a decrease in volume of air

  9. Buoyancy Buoyancyis a measure of the upward force a fluid exerts on an object that is submerged.

  10. Three types of Buoyancy: • Positive = floating • Neutral = • Negative = sunk • achieving nuetralbouyancy • in pool • Folding legs neutral

  11. Spear fisherman walking on ocean floor • Deflating swim bladder • PUFFER INFLATED • saving puffer • puffer caught in net • Leave me alone

  12. BASIC TERMS • VOLUME: Measure of the amount of space an object takes up

  13. MASS: measure of the amount of matter in an object

  14. MATTER: anything that takes up space and has a mass, “the stuff objects are made of”

  15. Volume and buoyancy The strength of the buoyant force on an object in water depends on the volume of the object that is underwater. As you keep pushing downward on the ball, the buoyant force gets stronger and stronger.

  16. how boat floatshow they floatBill Nye bouyancy • people vs boats • not so bouyant • bill nye • top BOAT crashes • photos boat crashes

  17. Archimedes’ Principal In the third century BC, a Greek mathematician named Archimedes realized that buoyant force is equal to the weight of fluid displaced by an object. HowStuffWorks Videos MythBusters Let's Talk Buoyancy.flv 3 min 1. Eureka! Episode 26 - Buoyancy.flv 5 min

  18. “I FOUND IT” • how he got idea

  19. Archimedes Principle • A body immersed in a fluid is buoyed up by a force equal to the weight of the fluid it displaces. • 2016 launches • FLIP • How not to launch

  20. Weightis a force, like any other pushing or pulling force, and is caused by Earth’s gravity. Weight is the downward force of gravity acting on mass. What is the rock’s weight? What is the rock’s mass?

  21. boat design ping pong bouyancy ping pong part 2 ping pong part 3 ping pong part 4 why boats flaot review

  22. Will it Float? What forces act on the object? Object

  23. Will it Float? = W Weight = B Buoyancy Force

  24. Will it Float? = W Weight = B

  25. Will it Float?

  26. Will it Float? Object Object Hovers

  27. Will it Float?

  28. Will it Float? Object Object Ascends

  29. Will it Float?

  30. Will it Float? Object Object Sinks

  31. Sinking and floating • Whether an object sinks or floats depends on how the buoyant force compares with the weight.

  32. Cruise and storm • Cruise hit waves • Various rough seas and ocean liners • oceanos • people on cruise • not so buoyant • self righting boat • sailboat overboard

  33. Buoyancy The buoyant force works opposite the weight of an object. Review

  34. Density and buoyancy If you know an object’s density you can quickly predict whether it will sink or float. Which ball will sink in water? Which ball will float in water? bowling ball 3min

  35. Density and buoyancy When they are completely underwater, both balls have the same buoyant force because they displace the same volume of water. • However, the steel ball has more weight since it has a higher density.

  36. How Do Ships Float?

  37. Ships Density of wood is about 0.5 to 0.8 g/cm3 so not surprising that wooden ships float. Density of iron 7.9 g/cm3. How is it that a battleship can float? 4-Jan-20 Physics 1 (Garcia) SJSU

  38. How do boats/ships float? Obviously the density of a metal boat or a is greater than the density of water, but they float because they contain a large amount of empty space. Because of their _______, they displace enough water to balance their own weight. shape

  39. Boats and apparent density Apparent density determines whether an object sinks or floats.

  40. A solid block of steel sinks in water. A steel ship with the same mass floats on the surface. ship design

  41. Why did the Titanic Sink? After it hit the iceberg, water began to fill the air filled compartments on the ship. The added weight of the water, combined with the weight of the ship became greater than the buoyant force supporting the ship. We all know what happened after that!

  42. Iron Ships, Floating & Sinking Iron ship floats since it is hollow inside. If water floods the inside then it sinks. 4-Jan-20 Physics 1 (Garcia) SJSU

  43. Check Yourself Did the designers of this “water bridge” have to account for the weight of ships or just the water? 4-Jan-20 Physics 1 (Garcia) SJSU

More Related