solve for a, explain each processs 3. The transparent "biospheres" beneath the Bay of Noli, in Savona, Italy, are part of thethree-year-old Nemo's Garden project, which aims to find innovative ways of growingcrops in places that lack freshwater or fertile soil (Fig 1). Resembling large balloons, theair-filled structures are anchored to the sea floor and float between 5 and 10 metersbelow the surface. A mercury U-tube manometer inside the biosphere attached to thebiosphere surface which is designed to indicate the water pressure outside. It is locatedat 10 m deep as shown in Fig 2. The air pressure inside the biosphere is known to be 765mm Hg.10 m735 mmSeawater360mmLFig 2 Sketch of the biosphere.Mercury-Shell wallFig 1 Nemo's garden.1) Based on the readings given in the illustration, determine the atmospheric pressureat the ocean surface (Assume the seawater density if 1024 kg/m³).2) If the radius of the biosphere is 0.985 m and the net weight of the biosphere includingthe facilities inside is 198 kg, determine the minimum force that the anchor mustprovide.

Answered: 3. The transparent "biospheres" beneath…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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solve for a, explain each processs

3. The transparent "biospheres" beneath the Bay of Noli, in Savona, Italy, are part of the
three-year-old Nemo's Garden project, which aims to find innovative ways of growing
crops in places that lack freshwater or fertile soil (Fig 1). Resembling large balloons, the
air-filled structures are anchored to the sea floor and float between 5 and 10 meters
below the surface. A mercury U-tube manometer inside the biosphere attached to the
biosphere surface which is designed to indicate the water pressure outside. It is located
at 10 m deep as shown in Fig 2. The air pressure inside the biosphere is known to be 765
mm Hg.
10 m
735 mm
Seawater
360mm
L
Fig 2 Sketch of the biosphere.
Mercury
-Shell wall
Fig 1 Nemo's garden.
1) Based on the readings given in the illustration, determine the atmospheric pressure
at the ocean surface (Assume the seawater density if 1024 kg/m³).
2) If the radius of the biosphere is 0.985 m and the net weight of the biosphere including
the facilities inside is 198 kg, determine the minimum force that the anchor must
provide.

Expert Solution

Step 1

Fluid pressure :

Fluid pressure is a measurement of the force per unit area acting on an item in the fluid or on the surface of a closed container. Furthermore, this pressure is caused by acceleration, gravity, or forces outside the confined container.

Given :

$\begin{array}{rcl} d e n s i t y o f s e a w a t e r & = & 1024 k g / m^{3} \\ a i r p r e s s u r e & = & 765 m m H g \\ d e n s i t y o f m u r c u r y (H g) ρ_{H g} & = & 13.5 \end{array}$

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