Pascal’s Law Development
(
)
(
)
(
)
(
)
(
)
x
s
x
s
x
s
x
x
net
P
dx
a
P
P
dxdydz
a
dsdz
ds
dy
P
dydz
P
a
dxdydz
a
ma
ma
dsdz
P
dydz
P
F
ma
F
=
→
=
−
=
−
=
∀
=
=
Θ
−
=
Σ
=
s
P
then
0,
x
Lim
2
2
2
:
Since
sin
direction

in x
forces
of
sum
at
Looking
(1)
:
condition
shear

no
For
ρ
ρ
ρ
ρ
dx
P
s
P
y
Wt
P
z
P
s
Cos
Θ
P
s
Sin
Θ
Θ
ds
dy
dz
P
x
x
y
z
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