Buoyancy and Archimedes’ Principle (4B)
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QUESTION
A cube of volume
1.0
×
10
−
3
m
3
1.0\times10^{-3}\,\text{m}^3
1.0
×
1
0
−
3
m
3
floats in oil with
ρ
=
800
kg/m
3
\rho=800\,\text{kg/m}^3
ρ
=
800
kg/m
3
. What is its maximum mass?
QUESTION
A
1.0
kg
1.0\,\text{kg}
1.0
kg
object experiences
F
B
=
3
N
F_B=3\,\text{N}
F
B
=
3
N
. What is its apparent weight in the fluid using
g
=
10
m/s
2
g=10\,\text{m/s}^2
g
=
10
m/s
2
?
QUESTION
An object has
ρ
obj
=
800
kg/m
3
\rho_{\text{obj}}=800\,\text{kg/m}^3
ρ
obj
=
800
kg/m
3
in water. What fraction of its volume is submerged when floating?
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ANSWER
0.80
0.80
0.80
. Submerged fraction equals object density divided by water density for floating objects.
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