Buoyancy Activity Sheet PHET P6 hw PDF

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Members: RELATING DENSITY WITH BUOYANCY OF A LIQUID (https://phet.colorado.edu/sims/density-and-buoyancy/buoyancy_en.html) I. PHET INTERACTIVE ON BUOYANCY  BLOCKS: (Check all SHOW FORCES)  USE: WATER (as liquid) A. SAME MASS: Wood vs. Brick - mwood = mbrick = 5kg SOLID

wood brick

Float or Sink in Water

Wt. in Air, W1 (N)

Float Sink

49 49

LIQUID DISPLACED Wt. in Water, W2 (N) W2 = BF – W1

Volsolid imm

0

Voldisplaced H20

BUOYANT FORCE H20

Wtdisplaced H20 (Compute using the ρconcept

5.00 2.50

49.00 24.50

1. For a solid that floats on a liquid, how do you compare Wtsolid with Buoyant Force (BF) of water? 2. What is meant by seemingly zero-wt of a floating solid on water? 3. How can Buoyant force of water be measured experimentally in terms of the solid immersed in it and in terms of the amount of displaced water?

B. SAME DENSITY: WOOD W/ DIFFERENT VOLUMES: mass1 = 2kg; Vol 1 = 5L; mass2 = 4kg; Vol 2 = 10L SOLID Float or Sink in Water

LIQUID DISPLACED Wt. in Water, W2 (N) W2 = BF – W1

Wt. in Air, W1 (N)

Volsolid imm

Voldisplaced H20

BUOYANT FORCE H20

Wtdisplaced H20 (Compute using the ρconcept

Wood 1 Float 19.60 0 2.00 19.60 Wood 2 Float 39.20 0 4.00 39.20 1. For a solid that floats on a liquid, how do you compare Wtsolid with Buoyant Force (BF) of water? Was this consistent for both wood regardless of their Masses and Volumes? 2. What is meant by seemingly zero-wt of a floating solid on water? 3. How can Buoyant force of water be measured experimentally in terms of the solid immersed in it and in terms of the amount of displaced water?

C. SAME VOLUME: Wood vs. Brick - Vol wood = Vol Brick = 5L SOLID

wood brick 1.

Float or Sink in Water

Wt. in Air, W1 (N)

Wt. in Water, W2 (N) W2 = BF – W1

Float

19.60

0

Sink

98.00

LIQUID DISPLACED Apparent Loss of Wt in Water, ALW=W1- W2

Vol solid

Vol displaced

imm

liqd

BUOYANT FORCE H20

Wtdisplaced liqd (Compute using the ρconcept

2.00

19.60

5.00

49.00

For a solid that floats on a liquid, how do you compare Wtsolid with Buoyant Force (BF) of water? Was this consistent for both wood regardless of their Masses and Volumes?

2. For a solid that sinks in water, where can Buoyant Force be directly related? What does this mean? 3. How can Buoyant force of water be measured experimentally in terms of the solid immersed in it and in terms of the amount of displaced water?

4. When a denser object sinks in water, does this mean that NO Buoyant Force acts on the solid object? Explain.

CONCLUSION: Why or when does a solid float or sink in a liquid? How can one experimentally measure Buoyant Force?...