- #1
Fabrizio Vassallo
- 17
- 6
Hello! This is my first post here, and I look forward to many more! This is a sort of riddle I was told today, and left me full of doubts.
So, the 'puzzle' was the following:
" There's a man carrying behind his truck an enclosed trailer full of birds inside it. All the birds are standing on the floor, none are flying. The weight of the trailer plus all the birds standing exceeds the permited amount the truck can carry (determined by law). At some point, the truck has to go through one of those things that check that the weight of the trailer doesn't exceed the permitted amount, so the man decides to scare away the birds so that they fly inside the trailer " How much will the trailer weigh?
So the riddle's answer provided is " it'll weigh the same because the air pushed down by the birds' wings will create the same equalizing force by the trailer's floor as it did when the birds were standing".
And I was thinking, won't some of that air pushed down go to sides and end up colliding with the walls instead of the floor? And if not, if still all the air pushed ends up colliding with the floor, will the trailer still weight the same as it did before?
I hope you understand my question, I have tried to translate the quiz as well as possible, since it was in Spanish originally.
If you don't understand it well enough, ask me and I can try to explain it in other ways :)
So, the 'puzzle' was the following:
" There's a man carrying behind his truck an enclosed trailer full of birds inside it. All the birds are standing on the floor, none are flying. The weight of the trailer plus all the birds standing exceeds the permited amount the truck can carry (determined by law). At some point, the truck has to go through one of those things that check that the weight of the trailer doesn't exceed the permitted amount, so the man decides to scare away the birds so that they fly inside the trailer " How much will the trailer weigh?
So the riddle's answer provided is " it'll weigh the same because the air pushed down by the birds' wings will create the same equalizing force by the trailer's floor as it did when the birds were standing".
And I was thinking, won't some of that air pushed down go to sides and end up colliding with the walls instead of the floor? And if not, if still all the air pushed ends up colliding with the floor, will the trailer still weight the same as it did before?
I hope you understand my question, I have tried to translate the quiz as well as possible, since it was in Spanish originally.
If you don't understand it well enough, ask me and I can try to explain it in other ways :)