lab5ArchONLIn
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Wake Tech *
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Course
110
Subject
Aerospace Engineering
Date
Apr 3, 2024
Type
docx
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3
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Lab 5: Archimedes’ Principle Objective: To determine the factors affecting the force of buoyancy on an object. You will be analyzing the effect of mass, volume, fluid type, and planet on the force of buoyancy on a submerged object.
Technical Information on simulation:
The simulation allows you to change the location, fluid
type, bottle mass, and bottle volume
. A force probe
will record the tension for the suspended bottle before,
during, and after the bottle is immersed in the fluid.
Procedure
Part 1: Force Buoyancy vs. Acceleration due to gravity
1.
Open the simulation Force Buoyancy Lab (opens in a new window)
at http://thephysicsaviary.com/Physics/Programs/Labs/ForceBuoyancy/
2.
Start your experiment on the Earth with a volume of 500 mL, a mass of 1000
grams, and set the fluid to Gasoline. 3.
Start the first trial and observe the force probe data in the graph located below the simulation. Record a reading for the force when it was in the air and the force when it was at rest and fully submerged in the fluid. Determine
the buoyant force. Buoyant force
=
force
∈
air
−
force
∈
fluid
Repeat for each of the other planetary bodies in the table below. Do not make changes to any other
parameter.
Plane
t
g (m/s
2
)
Force in Air
(N)
Force in
Fluid (N)
Buoyant force
(N)
Earth
9.8
moon
1.62
Mars
3.71
Venus
8.87
Jupiter
24.79
Vesta
0.22
4.
Create a Force Buoyancy vs. g
graph in Excel. Fit a trendline to the graph. Title the graph. Include the equation and correlation coefficient for the line of
best fit. Attach a screenshot of your graph here. A video for creating graphs is available for reference.
https://youtu.be/558oDsFWfqs
J. Regalado10/26/23 Page 1
of 3
5.
Based on the equation from your graph, what is the value of the slope? What
are the units for the slope? What quantity does it correspond to? (mass, volume, density).
6.
Calculate the experimental density of gasoline in kg/m
3
.
exp
erimenta l density
=
mass
volume
Compare it to the known (accepted) value from the table in part 2 by calculating the % error. Hint: The mass is the slope from the Force Buoyancy vs. g
graph, and the 500 mL volume must be converted to m
3
. To convert the volume in mL to m
3
, multiply the volume in mL by 0.000001. ( 1 mL =
1
x
10
−
6
m
3
=
0.000001
m
3
¿
. Show all your work.
%
Error
=
|
experimentaldensity
−
accepted density
accepted density
|
x
100
Part 2: Force Buoyancy vs. Fluid Density
1.
Start your experiment on Earth with a volume of 600 mL, a mass of 2000 grams, and set the fluid to Gasoline.
2.
Start the first trial and observe the force probe data. Record a reading for the
force when it was in the air and the force when it was fully in the fluid. Determine the buoyant force. Repeat for each of the other fluids in the table below. Do not make changes to any other parameter. Fluid
density
(kg/m
3
)
Force in Air (N)
Force in Fluid (N)
Buoyant force (N)
Gasoline
737
Maple Syrup
1333
Crude Oil
825
Fresh Water
1000
Mercury
13500
3.
Write at least two interesting observations from your data.
4.
Based on your data and observations, what is the relationship (i.e., directly proportional, inversely proportional) between density and buoyant force? Explain.
J. Regalado10/26/23 Page 2
of 3
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