1 / 9

Chapter 16 Section 2

Chapter 16 Section 2. Properties of Fluids. Buoyancy. Fluid = a liquid OR gas Buoyancy = The ability of a fluid (a liquid or a gas) to exert an upward force on an object immersed in the fluid If the object’s weight is equal to the buoyant force, the object will float

vivek
Download Presentation

Chapter 16 Section 2

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 16 Section 2 Properties of Fluids

  2. Buoyancy • Fluid = a liquid OR gas • Buoyancy = The ability of a fluid (a liquid or a gas) to exert an upward force on an object immersed in the fluid • If the object’s weight is equal to the buoyant force, the object will float • If the object’s weight is more than the buoyant force, the object will sink

  3. Archimedes’ Principle • The buoyant force on an object is equal to the weight of the fluid displaced by the object • If you place an object in water, it will push water out of the way as it sinks • If the weight of the water displaced = the block’s weight, it floats • If the weight of the water displaced < the block’s weight, it sinks

  4. Density • Mass per unit volume (g/L) • Wood and steel blocks example • An object will float if its density is less than the density of the fluid it is placed in • How does a steel boat float? • Density and buoyancy experiment

  5. Pascal’s Principle • Pressure = force exerted per unit area • P = F/A • Pressure applied to a fluid is transmitted throughout the fluid (pressure remains constant throughout a fluid) • If P1=P2, then F1/A1 = F2/A2

  6. Pressure-Force Equation • Page 487 • A hydraulic lift is used to lift a heavy machine that is pushing down on a 2.3 meter sq. piston (A1) with a force (F1) of 3700 N. What force (F2) needs to be exerted on a 0.072 meter sq. piston (A2) to lift the machine?

  7. Pressure-Force Equation • Your formula • P1 = P2 • F1/A1 = F2/A2 • 3700 N = F2 . 2.8 m sq. 0.072 m sq. • F2=95 N • A heavy crate applied a force of 1500 N on a 25 m sq. piston. What force need to be exerted on the 0.80 m sq. piston to lift the crate?

  8. Bernoulli’s Principle • As the velocity of a fluid increases, the pressure exerted by the fluid decreases • Blowing on paper • Hose end sprayer

  9. Fluid Flow • Viscosity = Resistance to flow by a fluid • Water = low viscosity (flows easily) • Cold syrup = high viscosity (flows slowly)

More Related