What is the Net Pressure in a Syringe?

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Homework Help Overview

The discussion revolves around calculating the net pressure in a syringe, given a force applied to the piston and the area of the piston. The subject area includes fluid mechanics and pressure calculations.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to calculate the pressure using a formula but questions the correctness of their result. Some participants suggest a simpler approach of using the basic pressure formula, while others note discrepancies in the problem's context as compared to previous assignments.

Discussion Status

Participants are exploring different interpretations of the problem, with some providing guidance on the calculation method. There is acknowledgment of confusion regarding the relationship between this problem and previous ones discussed in class.

Contextual Notes

There is mention of a potential misunderstanding based on prior assignments, and the original poster expresses frustration with the acceptance of their answer by the program.

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Homework Statement


A nurse applies a force 4.35 N to the piston of a syringe. The piston has an area of 5.99x10-5m2. What is the pressure in the fluid within the syringe? Answer in kPa.


Homework Equations


mg/2A=\DeltaP


The Attempt at a Solution


4.35/2*5.99x10-5= 36310.518 Pa converted to 36.31 kPa

I thought I was doing this right but the program isn't accepting my answer. Is there something that I did wrong? I've been having all sorts of issues with this assignment that I thought was fairly easy.
 
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I think pressure is just force/area
 
Thanks, that was right. My TA told the class that this one was just like one of our other problems but it isn't, that was part of my problem.
 
Net pressure in the fluid with in the syringe is
P = Pressure in side the syringe - atmospheric pressure out side the syringe.
 

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