Puzzle | Car and Helium Balloon motion

Puzzle:

A Geek was in a car with a helium balloon on a string that is tied to the floor. The windows are closed. When she steps on the accelerator, what happens to the balloon: does it move forward, move backwards, or stay put?

Solution:

  • When the car accelerates, the air is pushed backwards, just as your body is.
  • This sends a the Helium balloon, which is lighter than air, forward.
  • When the car brakes suddenly, the air piles up in front of the windshield.
  • This sends the balloon backwards.
  • Hence the Helium balloon moves in the direction of the acceleration of the car, i.e. and When the car moves backwards, the Helium balloon moves backwards.

My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.


Article Tags :
Practice Tags :


2


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.