Buoyancy forces Floating objects. Which object experiences the largest buoyancy force? 1.Box at top 2.Box in middle 3.Box at bottom 4.All same 1234567891011121314151617181920.

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Presentation transcript:

Buoyancy forces Floating objects

Which object experiences the largest buoyancy force? 1.Box at top 2.Box in middle 3.Box at bottom 4.All same

Which totally submerged object experiences the largest buoyancy force? 1.Box of gold 2.Box of aluminum 3.Box of ice 4.All the same

For an object floating on top of a fluid, F B =  g Volume. Which volume is it? 1.Volume of the object above fluid 2.Volume of object inside the fluid 3.Total volume of the object

Which question? 1.Easy 2.Hard

For an object floating on top of a fluid, m object g =  object g Volume. Which volume is it? 1.Volume of the object above fluid 2.Volume of object inside the fluid 3.Total volume of the object

You drop an ice (  = 0.92 g/cm 3 ) cube into a container that has water at the bottom (  = 1 g/cm 3 ) and alcohol (  = 0.81 g/cm 3 ) on top. Where does the ice eventually come to rest? 1.Floats on top of the alcohol 2.Sinks to the bottom of the water 3.On the boundary between alc. & water

In the previous problem, which direction is the buoyancy force from the alcohol? 1.Up 2.Down