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jenn91890
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Homework Statement
A diving sphere has a mass of 150,000.0kg and an external diameter of 7.000 meters. The sphere is anchored with a cable on the bottom of an ocean, at a depth of .8000 km. The density of sea water is 1025.0kg/m3.
A) What is the absolute pressure at that depth in pascals?
B) What is the buoyant force felt by the sphere when it is completely submerged?
C) Calculate the tension of the cable.
Homework Equations
A) P = Ps+DgH
P=?
Ps=1.01E+5Pa
D=1.025E+3kg/m3
G=9.81m/s2
H=.8000km
B) P=F/A, A=pi R2
P=(from above)
BF=?
R=3.5m
C) WF=m*g
TF+WF=BF
m=150,000kg
g=9.81m/s2
TF=?
BF= (from above)
The Attempt at a Solution
A) P=(1.01E+5) + [(1.025E+3)*(9.81)*(800m)]
=8.145E+6Pa
B) 8.145E+6Pa = BF / (pi * 3.5)2
BF=3.135E+8N
C) WF=150000*9.81
WF=1471500
TF=313500000-1471500
TF=3.120E+8N
Is this correct? The numbers seem very high...
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