Calculating Force Needed to Support an Object with Hydraulic Press

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Homework Help Overview

The discussion revolves around calculating the force required to support an object using a hydraulic press, specifically addressing the relationship between force, area, and height in the context of fluid mechanics.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to apply the principle of hydraulic systems but expresses confusion about incorporating height into the calculations. Some participants question the clarity of the problem statement, while others suggest considering additional factors such as the density of the oil.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the problem. Some guidance has been offered regarding the relationship between pressure, height, and the mass of the fluid involved, but no consensus has been reached on the exact approach to take.

Contextual Notes

There is mention of missing data regarding the density of the oil, which may affect the calculations. The original poster acknowledges this oversight, indicating a need for complete information to proceed effectively.

ShakeWell
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Ok, it's a two part question, i did the first part with no problem, which is how much force it takes to hold an object on the other end up, knowing the diameters and the mass of the object, i just used F1/A1 = F2/A2. Now, the 2nd part asks how much force is needed to support the object at a certain height. I have no idea how to put height into it. Anyone know? thanks in advance.

Tell me if u need me to post the exact problem
 
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Post the exact problem. Part 2 doesn't seem to make sense.
 
um wow, i just realized from typing the problem out, i been missing some given data, about the density of the oil in the lift. um, i think i got it now, you just calculated the mass that need to be lifted including the mass of the oil in the cylinder of the height needed to lift right?
 
I think you've got it. Let me restate it. Piston 1 is at height 0; piston 2 is at height H. The pressure at height 0 must support the column of oil (of height H) plus the added weight. Then apply F1/A1 = Pressureh=0.
 
alright, thanks
 

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