ME 311 Reading Guide #8
1/2
ME/NE 311
Introduction to
Fluid Sciences
Thermal and
Reading Guide #8
Chapter 4
Sections 2.3, 2.5, 3 and 4
(
NOTE:
Skip section 4.2.4: Forces on Submerged Curved Surfaces)
Section 4.2.3: Fluid Statics: Forces on Submerged Plane Surfaces
1.
Why was it important for the Philadelphia zoo to accurately compute the hydrostatic forces
on the glass window in the bear exhibit? _____________________________________________________
2.
The angle
θ
is measured from to what surface (__________________________) to what surface
(______________________________________________________).
3.
What branch of mathematics was used to translate the depth, z, into a relation in terms of
θ
used in Equation 4‐7. ______________________________
4.
In Equation 4‐7 and Figure 4.8, are axes ‘z’ and ‘y’ orthogonal? Yes or no
5.
The value of
ρ
gsin
θ
( )
y
c
represents the hydrostatic pressure evaluated at the centroid of a
ue or false
flat surface. Tr
6.
The density in
ρ
gsin
θ
( )
y
c
is that of (a) the flat surface, or (b) of the fluid in which the flat
surface is submerged. ____________
7.
The value of y
c
is measured from (a) the top of the flat surface, or (b) from the free surface of
the fluid in which the flat surface is submerged. ________
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 Spring '11
 alexia
 Statics, Fluid Dynamics, Fluid Mechanics, Buoyancy, Force, flat surface

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