# Questions tagged [hydrostatics]

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### Could a hybrid system of mechanical levers and hydrostatic/hydraulic cylinders be able to lift 200+ kg with the force of an arm?

I don't know much about levers and hydrostatic/hydraulics myself, so I hope I don't make too many misconceptions. The idea: Hypothetically, if you had a 40km+ long indestructible lever on a ...
• 115
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### How to Calculate Pressure at a Elevated Tank's Tap

If I had two tanks of equal diameter, and one was was shorter but elevated, but the other was taller but sitting on the ground, which tap (with both taps connected to the bottom of the two tanks) ...
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### What is the pressure of air trapped in glass of water turned upside down?

Consider filling a glass partially with water, covering it with a solid non-porous plate and then turning it upside down. The plate is not hinged to the glass. There is always some air trapped in the ...
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### How thick must a concrete or block wall be to withstand hydrostatic pressures up to three meters' height?

I'm planning a basement 3.6m depth, ~0.5m of which extended above ground surface level, in a deep clay/alluvial terrain (bedrock inaccessible). Torrential rainfall during rainy season saturates the ...
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### How do I draw moments on hinged gates?

Hello I had a quick question regarding moments on hinged gates on submerged curves. Is there a general rule that we follow when we draw moments on hinges, do we draw the hinges in the direction the ...
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### Hydrostatic forces

Hello I had a quick question regarding this homework problem. The tank in the figure is 120 cm long into the paper. Determine the horizontal and vertical hydrostatic forces on the quarter-circle panel ...
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### calculation for hydropower project

I'm studying a hydro-power project in high rise building. given a 100 story building(3 meter per floor) with 2.5 cubic meter of water per floor DAILY with 1 or more tanks within the floors and turbine ...
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### Hydrostatic transmission to directly translate movement

I have been thinking about small hydrostatic transmission to directly translate movement of stepper motor (NEMA 17-23 size, geared with 3:1 or 5:1 ratio). My design currently involves 2 identical ...
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### Computation of the moment of restoring forces for a floating vessel

Some slides associated to the book Handbook of Marine Craft Hydrodynamics and Motion Control (2021 edition) are provided by the author of the book here. At page 12 of the slides for Chapter 4, the ...
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### How is high static water pressure avoided in municipal water systems?

Most cities get their water supply from local sources (springs, rivers, lakes) so the pressure in the system is never more than what is produced by the pumps. But some cities get their water from ...
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### Quantifying the reaction force on fixed tubing connected to a peristaltic pump

I am not sure how I should consider the forces due to hydrostatic pressure when calculating the reaction force due to a fluid being pumped through fixed tubing with a peristaltic pump that I am using ...
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### Hydrostatic Pressure in Soil

In a saturated soil, why is the pore water pressure equal to hydrostatic pressure? Terzaghi's principle states that the effective stress between solid particles is equal to the total stress $t$ minus ...
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### Determine the length of the tube

I need to determine the size of the tube having the flow rate of the liquid (water) which is 5 ml/min and assuming the diameter of the tube is 4mm. How can i determine the size of the tube that takes ...
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### Archimedes Principle Question

A Spherical buoy has a diameter of 2m and weighs 3kN. It is designed to be used in a variety or circumstances by it being floated in water and anchored to the floor with a chain. Draw the free body ...
I can deduce the Forces for F1 and F2: \begin{align} F_1 &= \dfrac{1}{2}\rho g d_1^2 \\ &= \dfrac{1}{2} \cdot (1000 \cdot 9.81) \cdot d_1^2 \cdot 8 \\ \dfrac{F_1}{d_1^2} &= 39240\text{ ...