Soccer Ball Inflation
by Nathan Kraft
skips
questions
Act One

April 21, 2012
How many pumps will it take to fill the other soccer balls? How much air do you get from one pump?
Act Two
 Teacher noteSmall Ball Circumference = 17.5 in
Medium Ball Circumference = 27 in
Large Ball = 71 in
Act Three
 Linkuntitled
 Teacher materialuntitled
 VideoSoccer Ball Inflation  Act 3 on Vimeo
Sequel
show 48 more questions


Which one takes more pumps? (I might remix this with two people pumping both at the same time, and stopping after three pumps or so).

How many pumps for the two larger balls? (Where'd you get that giant soccer ball? It's awesome!)


Similarity of volumes. Also, how tall is the person who uses the big ball.






How many pumps to inflate the larger soccer balls? I think ACT 1 would be stronger if you cut away after 2 or 3 pumps of the midsize ball









How many more pumps did it take for the bigger soccer balls? (What is the work to fun ratio for each?)




How many pumps did it take to fill the medium sized ball? The large ball?















How much of the capacity in each ball was already inside it, in terms of air volume.... by % ?

how much higher will the bigger ball bounce? is this related to volume?




What's the relationship between the number of pumps and the radius of each ball?

How many pumps to inflate the middlesizes ball? How many for the big one?



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