All Questions
Tagged with classical-mechanics pressure
102
questions
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Support Reactions of Columns placed on Hydraulic bed (same pressure) with Unequal Loading
Suppose columns are supported on a deck with hydraulic cylinders which are coupled together with the same pressure. These columns are loaded with unequal loads F1 and F2 (F1 > F2). Will the ...
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4
answers
136
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Why does the piston 2 not accelerate faster than piston 1 when piston 1 is pushed?
Let say there are two pistons, $p_1$ and $p_2$ such that $p1$ has lesser area at its base and $p_2$ has larger area at its base. Then, by pascals law(pressure remains same everywhere on surface ...
- 91
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answer
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Why doesn't a blunt-tip nail crack the wood?
I came across this video, which shows you how to prevent the wood from cracking up at the ends while hammering a nail into it. The proposed solution is to make the nail tip blunt using a plier. This ...
- 12.5k
3
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Pressure inside a soap bubble made in a vacuum
A question I came across:
A soap bubble is made in vacuum by blowing an ideal diatomic gas in it. Assume the heat capacity of the soap film is much greater than that of the gas in the bubble. What ...
- 153
2
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2
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329
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Pressure in an accelerated container
Let us take a closed container completely filled with some liquid.Let us assume that the container moves with some acceleration in the horizontal direction.
Usually when we have such situations,we ...
2
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2
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Sand cone in the attic [closed]
My question is based on Halliday books Tom 2, chapter 13 (exercise 42).
There is a cone of sand laying in the attic. Consider stress of the floor under the sand cone.
Why the biggest stress is in ...
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1
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48
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Pressure and velocity in fluid dynamcis
I want to ask whether someone could help me solving a problem in understanding the relationship between pressure and velocity in fluid dynamics, please?
Why do I know that particles are not by ...
- 135
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How can we take pressure of ideal gas be equal to pressure of atmosphere if container is open
I can better put my doubt in form of problem:
The temperature of a gas placed in an open container is raised from $27^o$ C to $227^o$ C. The percent of the original amount of the gas expelled from the ...
- 326
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Pressure inside when a container is closed
Let us suppose that there is a container with its lid open sitting at the bottom of an ocean. The pressure at the bottom of the container will depend on the water column above it assuming only static ...
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Sunlight-powered device set to change world: will it work? [closed]
Vast areas of desert sand are being shone on upon by the sun. Now that's some ENERGY!
Using this proposed apparatus:
Sunlight over large area is concentrated on steam chamber, where water turns into ...
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41
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At what rate does oxygen un-dissolve after releasing pressure?
I have a soda bottle (consider no leaks) at room temperature and 55 psi. Oxygen is saturated in the water inside. After removing the cap, what law or formula can I use to estimate the time oxygen ...
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Dissolving air in water using a bicycle pump
Forgive me if this is dumb.
I connect the bicycle pump tube through a hole in a water bottle cap (half-filled with water) and place it in the water and then completely seal the setup. Then I press ...
- 340
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1
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76
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Importance of fluid mechanics and mechanics in physics and pipes
How does mechanics help prevent the pipes from bursting?
How does it link to the pressure of a pipe?
How does fluid mechanics link to physics when its about the liquid phase of chemical processes?
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2
votes
2
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321
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Air Pressure Acting Below Object
Consider an object resting on a surface. If I had to find the net force on the object, I would write an equation as follows: weight = normal force.
But what about the air pressure that's acting on the ...
- 251
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Is atmospheric pressure balanced on an object as it moves?
Consider a box sliding along a friction-less floor at a constant velocity.
Now typically atmospheric pressure is 14.7 psi on all surfaces of the object. But if it is moving at a constant velocity, ...
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