20. Against a rectangular dam of height h = 10 m, water
is stored as shown in figure. Value of x where it
should be hinged so as to maintain rotational
equilibrium
1'1
h = 10 m
(1) 5 m
(2)
10
m
3
2
(3)
20
m
3
(4) 8 m
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Answer:
Determine the pressure at the bottom of an open 5 -m-deep tank in which a chemical process is taking place that causes the density of the liquid in the tank to vary as
ρ=ρsurf
√
1+sin2(
h
hbot
π
2
)
where h is the distance from the free surface and ρsurf =1700kg/m3.
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