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4. Buoyancy and Archimedes' Principle Complete Submersion Flotation Archimedes' Principle Fluids > Archimedes' Principle Free to share, print, make copies and changes. Get yours at www.boundless.com www.www/boundless.com/physics?campaign_content=book_624_section_93&campaign_term=Physics&utm_campaign=powerpoint&utm_mediu m=direct&utm_source=boundless

5. Free to share, print, make copies and changes. Get yours at www.boundless.com Appendix

6. Key terms Archimedes principle The buoyant force exerted on a body immersed in a fluid is equal to the weight of the fluid the body displaces. buoyant force An upward force exerted by a fluid that opposes the weight of an immersed object. Free to share, print, make copies and changes. Get yours at www.boundless.com Fluids

7. Density and Submersion An unloaded ship (a) floats higher in the water than a loaded ship (b). Free to share, print, make copies and changes. Get yours at www.boundless.com OpenStax CNX. "OpenStax College, College Physics. November 3, 2012." CC BY 3.0 http://cnx.org/content/m42196/latest/?collection=col11406/1.7 View on Boundless.comCC BY 3.0http://cnx.org/content/m42196/latest/?collection=col11406/1.7View on Boundless.com Fluids

8. Archimedes' Principle - Simple Example We use Archimedes' Principle to determine the number of penguins an ice float can dryly support. Free to share, print, make copies and changes. Get yours at www.boundless.com View on Boundless.com Fluids

9. Archimedes principle The buoyant force on the ship (a) is equal to the weight of the water displaced by the ship—shown as the dashed region in (b). Free to share, print, make copies and changes. Get yours at www.boundless.com Amazon Web Services. "Boundless." License: Other http://s3.amazonaws.com/figures.boundless.com/50953ccfe4b0b4558d8e546b/Ships.png View on Boundless.comLicense: Otherhttp://s3.amazonaws.com/figures.boundless.com/50953ccfe4b0b4558d8e546b/Ships.pngView on Boundless.com Fluids

10. Buoyant force The fluid pushes on all sides of a submerged object. However, because pressure increases with depth, the upward push on the bottom surface (F2) is greater than the downward push on the top surface (F1). Therefore, the net buoyant force is always upwards. Free to share, print, make copies and changes. Get yours at www.boundless.com OpenStax CNX. "OpenStax College, College Physics. November 3, 2012." CC BY 3.0 http://cnx.org/content/m42196/latest/?collection=col11406/latest View on Boundless.comCC BY 3.0http://cnx.org/content/m42196/latest/?collection=col11406/latestView on Boundless.com Fluids

11. Archimedes principle The volume of the fluid displaced (b) is the same as the volume of the original cylinder (a). Free to share, print, make copies and changes. Get yours at www.boundless.com OpenStax CNX. "OpenStax College, College Physics. November 3, 2012." CC BY 3.0 http://cnx.org/content/m42196/latest/?collection=col11406/1.7 View on Boundless.comCC BY 3.0http://cnx.org/content/m42196/latest/?collection=col11406/1.7View on Boundless.com Fluids

12. Helium airship The USS Macon, a 1930s helium-filled airship. Free to share, print, make copies and changes. Get yours at www.boundless.com Wikimedia. "USS Macon F9C." Public domain http://commons.wikimedia.org/wiki/File:USS_Macon_F9C.jpg View on Boundless.comPublic domainhttp://commons.wikimedia.org/wiki/File:USS_Macon_F9C.jpgView on Boundless.com Fluids

13. Free to share, print, make copies and changes. Get yours at www.boundless.com Fluids The buoyancy force always points A) downwards because the pressure of a fluid increases with depth B) upwards because the pressure of a fluid decreases with depth C) downwards because the pressure of a fluid decreases with depth D) always points upwards because the pressure of a fluid increases with depth

14. Free to share, print, make copies and changes. Get yours at www.boundless.comwww.boundless.com Boundless - LO. "Boundless." CC BY-SA 3.0 http://www.boundless.com/CC BY-SA 3.0http://www.boundless.com/ Fluids The buoyancy force always points A) downwards because the pressure of a fluid increases with depth B) upwards because the pressure of a fluid decreases with depth C) downwards because the pressure of a fluid decreases with depth D) always points upwards because the pressure of a fluid increases with depth

15. Free to share, print, make copies and changes. Get yours at www.boundless.com Fluids The buoyancy force does not depend on the A) shape of the object B) volume of the object C) density of the object D) weight of the object

16. Free to share, print, make copies and changes. Get yours at www.boundless.comwww.boundless.com Boundless - LO. "Boundless." CC BY-SA 3.0 http://www.boundless.com/CC BY-SA 3.0http://www.boundless.com/ Fluids The buoyancy force does not depend on the A) shape of the object B) volume of the object C) density of the object D) weight of the object

17. Attribution OpenStax CNX. "OpenStax College, College Physics. September 17, 2013." CC BY 3.0 http://cnx.org/content/m42196/latest/?collection=col11406/1.7CC BY 3.0 http://cnx.org/content/m42196/latest/?collection=col11406/1.7 Wikipedia. "Archimedes principle." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Archimedes_principleCC BY-SA 3.0http://en.wikipedia.org/wiki/Archimedes_principle Wikipedia. "Archimedes principle." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Archimedes%20principleCC BY-SA 3.0http://en.wikipedia.org/wiki/Archimedes%20principle OpenStax CNX. "OpenStax College, College Physics. September 17, 2013." CC BY 3.0 http://cnx.org/content/m42196/latest/?collection=col11406/latestCC BY 3.0 http://cnx.org/content/m42196/latest/?collection=col11406/latest Wikipedia. "Archimedes principle." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Archimedes%20principleCC BY-SA 3.0http://en.wikipedia.org/wiki/Archimedes%20principle Wikipedia. "buoyant force." CC BY-SA 3.0 http://en.wikipedia.org/wiki/buoyant%20forceCC BY-SA 3.0http://en.wikipedia.org/wiki/buoyant%20force OpenStax CNX. "OpenStax College, College Physics. September 17, 2013." CC BY 3.0 http://cnx.org/content/m42196/latest/?collection=col11406/1.7CC BY 3.0 http://cnx.org/content/m42196/latest/?collection=col11406/1.7 Wikipedia. "Archimedes principle." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Archimedes%20principleCC BY-SA 3.0http://en.wikipedia.org/wiki/Archimedes%20principle Free to share, print, make copies and changes. Get yours at www.boundless.com Fluids