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Balloon in a car (Posted on 2004-12-16) Difficulty: 1 of 5
You work for a balloon delivery service and you are delivering a single, helium-filled balloon in your car. To prevent the balloon from bouncing around on the ceiling while you are driving you have tied a string with a weight on it to the balloon. The weight is resting on the floor and the balloon is floating just below the ceiling.

When you accelerate, does the balloon stay where it is, move backward, or move forward? What does it do when you make a turn?

Assume all the windows are closed and the vents are turned off so there is no air flow inside the car to affect the balloon.

See The Solution Submitted by Sing4TheDay    
Rating: 3.6667 (3 votes)

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re(2): Solution (spoilers) | Comment 7 of 19 |
(In reply to re: Solution (spoilers) by nikki)

Incidentally, I have seen this happen first hand.  Although I was not smart enough to tie down the balloon and it indeed bounced around on the ceiling... forward when accelerating, backward when decelerating, etc. 

It was weird!


  Posted by Sing4TheDay on 2004-12-16 17:03:16
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