=Homework Problem: Longest Vertical Soda Straw

[Gott_ist_tot]

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.

 

[vaishakh]

Can you please specify your doubt a bit more. I didn't understand what the question means?

 

[NewScientist]

Probably something to do with cohesive and adhesive forces? or over coming gravity by the force exerted by the sipping the straw

 

[brewnog]

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.

 

[brewnog]

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.