Testing Poiseulle's Law: Flow Rate vs Length

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SUMMARY

The discussion focuses on testing Poiseuille's Law by graphing flow rate against tube length. Participants confirm that plotting flow rate (ΔV/Δt) on the y-axis and tube length on the x-axis is appropriate. Additionally, using flow rate versus inverse length will yield a linear graph, aligning with the theoretical expectations of Poiseuille's Law. This approach effectively demonstrates the relationship between flow rate and tube length in fluid dynamics.

PREREQUISITES
  • Understanding of Poiseuille's Law in fluid dynamics
  • Basic knowledge of graphing techniques
  • Familiarity with flow rate calculations (ΔV/Δt)
  • Concept of inverse relationships in mathematics
NEXT STEPS
  • Research graphing techniques for experimental data analysis
  • Explore the implications of Poiseuille's Law in real-world applications
  • Learn about fluid dynamics and viscosity effects on flow rate
  • Investigate the use of software tools for data visualization
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Students and professionals in physics, engineering, and fluid dynamics who are testing theoretical laws and analyzing experimental data.

Jodi
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Hi; Could someone please help me with this question: "Suppose you have measured the flow rate for a number of tubes with different lengths but the same radius, how would you graph your data to test Poiseulle's law (Hint: choose the scales of the axes so that the theoretical graph is a straight line)"
Could I do flow rate (change in V)/(change in time) on the y-axis and do length on the x axis? Thanks for your help.
 
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Flow versus inverse length would give you the linear appearance required of the theoretical graph.

Daniel.
 

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