=Homework Problem: Longest Vertical Soda Straw

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SUMMARY

The discussion centers on the physics behind the longest vertical soda straw one can drink from, emphasizing the roles of atmospheric pressure, cohesive forces, and adhesive forces. Participants clarify that the act of sipping does not pull liquid up the straw but rather allows atmospheric pressure to push the liquid upward. Understanding these principles is crucial for solving the homework problem effectively.

PREREQUISITES
  • Basic understanding of atmospheric pressure
  • Knowledge of cohesive and adhesive forces
  • Familiarity with fluid dynamics principles
  • Concept of gravity's effect on liquid movement
NEXT STEPS
  • Research the principles of atmospheric pressure and its effects on fluid movement
  • Study cohesive and adhesive forces in liquids
  • Explore fluid dynamics, focusing on the behavior of liquids in tubes
  • Investigate real-world applications of these principles in engineering
USEFUL FOR

Students studying physics, educators teaching fluid dynamics, and anyone interested in the scientific principles behind everyday phenomena like drinking through a straw.

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I received a homework problem that I need guidance on where to start.

What is the longest vertical soda straw you could possibly drink from?

I do not know where to start on this problem. A small push in the right direction would be greatly appreciated.
 
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Can you please specify your doubt a bit more. I didn't understand what the question means?
 
Probably something to do with cohesive and adhesive forces? or over coming gravity by the force exerted by the sipping the straw
 
Think about what's actually happening when you suck.

You're not so much pulling liquid up the tube as much as allowing atmospheric pressure to push it up.
 
Oh, and please don't repeat your questions. I've just seen that you had a good answer given just a few hours ago, the first time you asked.
 

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