Adhesive Forces: Bigger vs. Smaller Straws

In summary, the conversation is discussing whether the adhesive force is greater in a smaller tube compared to a bigger tube at the top. It is questioned whether it would take more energy to remove water from the top of a thinner straw, and if gravity eventually cancels out the capillary rising, making the adhesive force at the top of the straw equal to a thicker tube. The conclusion is that the adhesive force is actually greater in a bigger tube at the top, meaning it would take less energy to remove the same amount of fluid from a smaller tube.
  • #1
Dion
5
0
Is the adhesive force greater in a smaller tube then a bigger tube at the top?

So would it take more energy to take out water at the top of the straw from the thinner straw?

Or would, due to gravity cancelling eventually the capillary rising, the adhesive force at the very top of the straw is equal to a thicker tube at the very top?

Thanks in advance
 
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  • #2
Dion said:
Is the adhesive force greater in a smaller tube then a bigger tube at the top?
No, to other way around.
 
  • #3
A.T. said:
No, to other way around.
So it takes less energy to take the same amount of fluid out of the smaller tube?
 

1. What is the concept of adhesive forces in relation to bigger and smaller straws?

Adhesive forces refer to the attractive forces between molecules of different substances. In the context of bigger and smaller straws, it refers to the strength of the attraction between the liquid and the straw's surface.

2. How do bigger and smaller straws affect adhesive forces?

The size of the straw can affect the surface area and the surface tension of the liquid, which ultimately affects the strength of adhesive forces. In general, bigger straws have a larger surface area and therefore stronger adhesive forces compared to smaller straws.

3. What are the implications of stronger adhesive forces in bigger straws?

Stronger adhesive forces in bigger straws mean that the liquid will have a stronger attraction to the straw's surface, making it more difficult for the liquid to flow through the straw. This can result in slower flow rates and potentially cause clogs in the straw.

4. How do smaller straws compensate for weaker adhesive forces?

Smaller straws have a smaller surface area and therefore weaker adhesive forces. To compensate for this, smaller straws are often made with materials that have a lower surface tension, such as plastic, which allows the liquid to flow more easily through the straw.

5. Can the size of the straw affect the taste of the liquid?

While the size of the straw may affect the flow rate and the strength of adhesive forces, it should not significantly impact the taste of the liquid. However, it is worth noting that smaller straws may have a faster flow rate, which could potentially result in a stronger taste or a different drinking experience compared to using a bigger straw.

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