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Birds

Name: Anonymous 2008-09-22 8:49

a box is on a scale, the scale shows 1000 kg. insert pidgins, now the scale shows 1050 kg. the box is air tight. pidgins scare easy, a)they start flying, without touching any of the walls. what does the scale show now? 
b) they start flying in a perfect vertical motion, hovering above the surface floor. what does thescale show now?

Name: Anonymous 2008-09-22 16:09

The scale shows the exact same, doesn't matter what the birds are doing if the box is airtight.


Obvious question is obvious

Name: Anonymous 2008-09-22 23:18

>>2
rly?

Name: Anonymous 2008-09-23 7:58

>>3

He's right.

Name: Anonymous 2008-09-23 7:59

>>4
No he isn't.

Name: Anonymous 2008-09-23 8:34

lol

Name: Anonymous 2008-09-23 11:50

Can someone go through the logic involved in coming to the correct solution?

Name: Anonymous 2008-09-23 12:36

>>7
Flying bird is pushing against air which is pushing against the box, in the exact same way stationary bird would be pushing against the box.

Name: Anonymous 2008-09-23 14:46

>>7

The logic involved is really simple.

The box is airtight. Nothing can get in or out. How exactly are you expecting the mass to change?

Name: Anonymous 2008-09-23 15:14

This discussion is going to spiral like the one with the plane on the treadmill, isn't it?

Name: Anonymous 2008-09-23 17:13

http://kwc.org/mythbusters/2007/04/episode_77_birds_in_a_truck_bi.html

MYTH BUSTED

The box will weigh the same no matter what happens inside, if it is air-tight.

Name: Anonymous 2008-09-23 17:18

>>11
u bastard, u spoiled it

Name: Anonymous 2008-09-23 18:39

Just like two fucking hippies in an airtight Volkswagen can never set the van a-rockin', right?

Name: Anonymous 2008-09-23 21:34

>>13
That's a matter of momentum, not weight.

Name: Anonymous 2008-09-24 8:26

>>14
Tell that to the scale.

Name: Anonymous 2008-09-24 9:13

>>15


a)they start flying, WITHOUT TOUCHING ANY OF THE WALLS. what does the scale show now? 

Oh hey lol.

Name: Anonymous 2008-09-24 9:41

>>16
You don't understand Newton's laws of motion.
That's okay though, menial work is where it's at in the U.S. these days, and even more so in the foreseeable future.
You can flip those burgers with pride, knowing you're serving your fat and incompetent political overlords put into place by democratic decadence.

Name: Anonymous 2008-09-24 15:29

>>17

Fuck newton's laws of motion, I understand special relativity.

Name: Anonymous 2008-09-24 16:04

Question b is the same thing. The force of the birds pushing up equals the force of the air pushing down. Scale stays the same.
Don't change these.
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