- #1
lvluffinz
- 5
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Any help would be GREATLY appreciated as I have an exam coming up on this.
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Need help obtaining hydrostatic forces on a gate
- Thread starter lvluffinz
- Start date
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- Tags
- Fluids Forces Gate Hydrostatic Mechanics
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Homework Help Overview
The discussion revolves around calculating hydrostatic forces on a gate, specifically using the formula F = pgA(h bar). Participants are exploring the implications of water pressure and the conditions under which the gate remains stationary versus when it starts to move.
Discussion Character
- Exploratory, Assumption checking, Conceptual clarification
Approaches and Questions Raised
- Participants are questioning the water pressure at the horizontal part of the gate and the conditions necessary for the gate to remain stationary. There are discussions about the sufficiency of the given information and the need for additional known values like water density and gravitational acceleration.
Discussion Status
There is an ongoing exploration of the problem with various participants providing hints and asking clarifying questions. Some guidance has been offered regarding the need to draw a free body diagram (FBD) and to show effort in the work before receiving further help. Multiple interpretations of the gate's diagram are also being discussed.
Contextual Notes
Participants note the lack of specific information provided in the problem statement, which is impacting their ability to proceed. There are also references to private conversations about the diagram's accuracy, indicating some uncertainty in the visual representation of the problem.
Any help would be GREATLY appreciated as I have an exam coming up on this.
- #2
mfb
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It is not that simple. Two questions that might help:
What is the water pressure at the horizontal part?
What is the difference between "does not move yet" and "starts to move", which condition has to be satisfied to not move?
What is the water pressure at the horizontal part?
What is the difference between "does not move yet" and "starts to move", which condition has to be satisfied to not move?
- #3
lvluffinz
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mfb said:
We weren't given any of that info. Just threw this question on us...
- #4
mfb
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This is something you should find out! The given information is sufficient to do so.
You'll also need the density of water and the gravitational acceleration g but those are well-known values.
You'll also need the density of water and the gravitational acceleration g but those are well-known values.
- #5
lvluffinz
- 5
- 2
mfb said:
He's basically disappeared until the exam, so there isn't a thing I could do sadly.
- #6
berkeman
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lvluffinz said:
You can use the hints that you've been given in the thread and the hints I sent you via PM to draw the FBD and start working out the forces and moments. We require that you show effort on your schoolwork here before we can offer tutorial help...
- #7
lvluffinz
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Doing that right now!berkeman said:
- #8
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I'm not sure I understand the diagram. I think the gate is an L shape, but the gap between the hinge and the vertical part bothers me.
- #9
berkeman
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haruspex said:
Yeah, I think it's drawn incorrectly as well. I mentioned that to the OP in a private conversation we were having, and I probably should have posted it in-thread as well.
- #10
lvluffinz
- 5
- 2
Should have updated this thread, but I've figured it out. Solved it and all! I'll post the answer later tomorrow as I'm about to head to bed for my exam!
EDIT: I just scanned my working pretty quick and snipped it. will post here.
EDIT: I just scanned my working pretty quick and snipped it. will post here.
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- #11
- 42,906
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I get the same.
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