Forces on a constrained party balloon

  • Thread starter Thread starter BuddyJim
  • Start date Start date
  • Tags Tags
    Balloon Forces
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
Sign up Log in
1 reply · 3K views
BuddyJim
Messages
2
Reaction score
0
Hi, A party balloon is glued onto an straw. The user inflates the balloon by blowing through the straw. However, the balloon is constrained due the presence of a rigid wall just beyond it (causing the balloon to expand upwards or backwards towards the person inflating it!). I would like to know if it is possible to estimate the forces between the balloon and the straw (at the point of gluing).

Strange question, I know.
 

Attachments

  • constrained party balloon.PNG
    constrained party balloon.PNG
    6.7 KB · Views: 592

Discussion

Physics news on Phys.org
I'd start by knowing the PSI. then I would find the area of the bonded contact surface in square inches.

Then I would divide PSI by square inches to get pounds. That number in pounds would be the force.

Just a guess.