Jump to content
Sign in to follow this  
  • entries
    30
  • comments
    10
  • views
    8,485

"I was hiding under your porch b/c I love you"

pegkowalski

404 views

Everyone remembers when the charming childhood film "Up" came out. Parents cried; kids sobbed; babies teared up. It was great. Very...UP-lifting...

up-movie-1.jpg

Anyways, let us delve into the wonderful world of plausibility. Could Mr. Frederickson's house ACTUALLY fly? If so...how many balloon's would it truly take?

Let me draw you a mental diagram: so we have the house, attached to a series of balloons. The focre upward is the buoyant force, also known as air density, by the downward acceleration of gravity, by the volume of the balloon. The downward force is that of mass times downward acceleration. For the house to even begin to lift, the buoyant force must equal 'mg.' To fly, it must be greater than 'mg.'

Let's throw some values in there.

Avg. Air Density: 1.225 kg/m^3

Gravitational Acceleration: 10 m/s^2

Volume of a balloon: (4/3) (pi) (r^3)

= (1.333) (3.142) (0.5) ft.^3

= (1.333) (3.142) (0.125)ft.^3

= 0.524 ft.^3

Avg. Mass of a House: 54431.1 kg

Let's say we need 'x' balloons.

(x) (p) (g) (V) = (m) (g)

(x) (p) (V) = (m)

(x) (1.225 kg/m^3) (0.524 ft.^3) = (54431.1 kg)

x = 84,797

That's quite a lot of balloons. Like...that's almost 85,000 balloons just to TAKE OFF let alone fly to Paradise Falls! Plausibility? Slim to none. Luckily, this is a Pixar movie and it doesn't quite matter if it's realistic or not. Interesting though...to me at least.

I guess to sum it all up, Russell once said:

"That might sound boring, but I think the boring stuff is the stuff I remember the most."



0 Comments


Recommended Comments

There are no comments to display.

Guest
Add a comment...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Terms of Use

The pages of APlusPhysics.com, Physics in Action podcasts, and other online media at this site are made available as a service to physics students, instructors, and others. Their use is encouraged and is free of charge. Teachers who wish to use materials either in a classroom demonstration format or as part of an interactive activity/lesson are granted permission (and encouraged) to do so. Linking to information on this site is allowed and encouraged, but content from APlusPhysics may not be made available elsewhere on the Internet without the author's written permission.

Copyright Notice

APlusPhysics.com, Silly Beagle Productions and Physics In Action materials are copyright protected and the author restricts their use to online usage through a live internet connection. Any downloading of files to other storage devices (hard drives, web servers, school servers, CDs, etc.) with the exception of Physics In Action podcast episodes is prohibited. The use of images, text and animations in other projects (including non-profit endeavors) is also prohibited. Requests for permission to use such material on other projects may be submitted in writing to info@aplusphysics.com. Licensing of the content of APlusPhysics.com for other uses may be considered in the future.

×
×
  • Create New...