Posted on 01/19/2015 11:49:47 AM PST by Kaslin
It was played out before the game began.
GB could have wiped them out.
I did not bet on this game.
They wanted West vs East.
They have it.
He had a good game.
I wondered about that, too. Must be easier to run when a ball is 1 oz lighter.
That's as far as I could get with my pea brain ... I'm still lookin' for the transition from air to he ... it just magically appeared (in MY way of reading, anyway)
That was because the source that was cut and pasted from was comparing a football filled with air and one filled with helium...
:)
If it isn’t an issue, why the investigation?
Probably have my daytime/nighttime/summer/winter data all jumbled up
lets see if we can post their calcs without the word wrap.
Calculation of Weight
Weight of Air in Football
= WAir = mWAir = [PfVf/(mV)*Pa] = 9.67 g
Weight of He in Football =
= WHe = mWHe = [PfVf/(mV)*Pa] = 1.34 g
Weight of Football with Air
= WF(Air) = WF + WAir = 421 g = 0.421 kg
Weight of Football with He
= WF(He) = WF + WAir = 412 g = 0.412 kg
Conclusion: The He-filled football is about 2% lighter than the Air-filled football.
/8^)
Clearly, the teams do not trust the refs to provide the balls.
It is far better to have the onus on the teams to provide the balls.
I never realized how particular professional athletes can get about their balls.
When I was a kid, we just grabbed whatever balls we could get our hands on and played with them.
But I am smarter than ya... :)
I got sidetracked on weight. Lets talk PRESSURE.
If they filled their balls in a nice, warm room at 80 F to 13 psig.
Then the balls would automatically depressure to about 10.4 psig if they are playing outside in the cold at 30 F...
Assuming an ideal gas
P1 = 13 psig => 27.7 psia
T1 = 80 F == +460 ==> 540 R
T2 = 30 F == +460 ==> 490 R
P2 = P1 * (T2/T1) = 27.7 * (490/540) = 27.7 * 0.907 = 25.1 psia
P2 = 25.1 psia ==> 10.4 psig
Now THAT’S what I was gettin’ at ... ‘cept ... if both teams are mandated to fill their balls to x ... both teams will experience the same increase or loss ... so there’s no difference
Is that how you northerners do it?
Down here we get in big trouble if we play with someone elses balls...
(Of COURSE I knew what you were talkin' 'bout ... but I couldn't resist)
Depends on when they fill their balls.
If you make them set the pressure in their balls in a nice, ice cold, dressing room, then their balls will be at 13 psig.
So if they are doing the pressure check at the field, all you have to do is to turn the heat off to the room at their ball pressurizing station.
:)
I’m not sure about that. I used to spend my summers down in Alabama (grandmother’s house) and I never used my own balls. In fact none of us could afford our own balls. And even if we could, we had to order them from the Sears & Roebuck catalog and wait 4-6 weeks. So we just used whatever we could find in the barn and that was good enough for us.
I forget the reason for the conversation.
Rush's transcript is very informative
Patriots by 3 in a hard fought battle ... the best SB in many years ... true gladiatorial spirit.
From the Wilson TRIVIA site...
“How well do you know the game?
Wilson, The NFL and Ada, Ohio 2014 Super Bowl XLVIII Fact Sheet
Number of football-only factories in the United States: 1
Number of Wilson football-only factories in world: 1
First year Wilson began making the Official NFL Game Ball: 1941
First year that the Wilson Factory in Ada, Ohio, began producing Official NFL Footballs: 1955
Total number of footballs produced annually at the Ada Football Factory: 700,000
Total number of workers employed by the Wilson football factory in Ada, Ohio: 130
Average number of years employed by Wilson for Ada Football
Factory workers: 20
Average number of footballs made by a single cowhide: 10
Pounds of air pressure in an NFL game ball: 13 psi
How many game balls does each team receive? Each team is shipped 108 game balls - 54 for practice and 54 for the game.
Total number of game balls used during the Super Bowl: 120, including 12 Kicker Balls
Number of laces found on an NFL game ball: 1
Total number of lace holes on an NFL game ball: 16
Total number of panels on an NFL game ball: 4
Difference between the regular NFL game ball and NFL kicker ball: Letter “K” is inscribed on the kicker ball, sealed in boxes (with anti-tampering tape), sent to the NFL official hotel one week before the game and then delivered to the officials’ room approximately 2.5 hours prior to kickoff.
The special “watermark” that is printed on a Wilson football to prove that it is authentic: The letter “W”
When are the Super Bowl footballs delivered to the teams? Wilson employees work through the night to ship game balls to the teams within 24 hours of NFC and AFC championship games.
When do the teams give the game officials their 54 game balls? Teams present their 54 game balls to the officials on game day for inspection, then a DNA ink is added to the laces to indicate they are the authentic on-field game balls.
What is the difference between the regular season Wilson NFL Game Ball and a the Super Bowl Game Ball? The Super Bowl ball has the Super Bowl logo stamped on the ball, along with the names of both teams, date and location.
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