Balloon Physics: How to Move a Balloon on a String Using Simple Materials

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To transport a balloon along a string stretched between two chairs, one effective method involves threading the string through a straw and attaching a blown-up balloon to the straw, allowing it to move to the opposite end. The challenge arises when attempting to return the balloon. While pushing it back with a finger may not be acceptable, the discussion suggests exploring the use of additional balloons or other creative solutions. There's also a consideration of whether the balloon can be turned around once it reaches the first chair. An alternative idea proposed is to elevate one of the chairs to facilitate the balloon's return. Overall, the conversation emphasizes the need for innovative thinking and adherence to specific guidelines regarding acceptable practices in this task.
sax29
If you have a string strung horizontally between two chairs, how can you get a balloon from one end of the string to the other, and then back again? You can use items such as tape, paperclips, straws, more balloons, ect. I have tried this and have found if you put the string through a straw, and then tape a blown up balloon to the straw, the balloon will travel to the other side of the string. The problem is how do you get the balloon back again?
 
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Push it with your finger?

Seriously, what practices are allowed and which are forbidden? I'm assuming pushing it back across with your hand is not an acceptable solution. But you say "other balloons" can be used, so there's a way. Can you turn the balloon around onve it reaches the first chair?

Personally, I would probably just elevate one of the chairs.
 

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