What's new
Fantasy Football - Footballguys Forums

This is a sample guest message. Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

What will th PSI of footballs be Sunday in Minnesota? (1 Viewer)

dansav

dansav

Footballguy
(Yahoo) Ideal Gas Law causes the air pressure of a football to decrease in colder weather, a physics lesson the NFL inadvertently learned/taught last year when it punished the New England Patriots after the league claimed two staffers tampered with the game balls in the AFC championship game. The franchise countered that the deflation of the balls was an act of nature, not subterfuge. You were no doubt bored with the back-and-forth a long time ago. Forget deflate-gate, Seattle is visiting Minnesota on Sunday afternoon and the weather forecast calls for temperatures to hover around zero. If so, it could rank as one of the 10 coldest games in NFL history. The wind chill is expected to hit between minus-15 and minus-20. This could deliver the mother of all psi level drops. So how low should the air pressure go Sunday in the brutal chill of Minneapolis? Try about 9.0 psi. Maybe even into the 8s. Ignoring the wind chill (meaning the following is a conservative estimate, meaning the wind chill could make the on-field ball pressure even lower), the on-field ball pressure will be about 9 psig (assuming it was pressurized to 12.5 psig at 70F and measured on-field at 0F), Dr. Michael Naughton, the chair of the physics department at Boston College wrote to Yahoo Sports. Thats a low-pressure ball.

 
Last edited by a moderator:
Since it doesn't involve the Pats I doubt anyone will care. But yes, I would think it would be below the minimum as well.

 
I'm sure ESPN, NBC etc. will be doing their own PSI tests during the cold weather playoffs games and releasing the results live to enlighten all of us.

 
I think it's more important what the PSI of the footballs will be tomorrow in Minnesota, considering that is when the game is being played.

 
Cold temperatures don't cause the pressure to decrease. Changes in temperature cause the pressure to increase or decrease, slowly.

The temperatures during the Pats game last year were around 50 degrees. Tomorrow, it's expected to be about 50 degrees colder, so it'll likely be a far bigger impact on the PSI, depending where and when the balls are filled, what air is used, and what happens to the balls after they've been measured. If they're filled with cold air and the temperatures don't drop substantially during the game, it won't have a huge impact.

But, if a Vikings ball boy illegally takes them with him on a bathroom break, they might lose a little more pressure (wink, wink)

It's still amusing that Patriots fans still cry "Ideal Gas Law" as though it means something. It wasn't that cold during that game, and it takes a bit of time for the temperature change to affect the PSI of the footballs.

 
I am more concerned about it tomorrow than today. ;)

I think they will be tested for compliance since it is under scrutiny.

 
Will an employee of one of the teams sneak off to the bathroom for 90 seconds, while carrying a bag of footballs?

 
Last edited by a moderator:
So why don't they test the balls and release the findings if the league really wants to be all about getting to the truth? You know why, because it would destroy their case.

If it would prove any guilt they would be testing and flooding the media with the results.

 
Actually the temperature will be low enough that the balls will harden and the psi will be irrelevant

 
dansav said:
(Yahoo) Ideal Gas Law causes the air pressure of a football to decrease in colder weather, a physics lesson the NFL inadvertently learned/taught last year when it punished the New England Patriots after the league claimed two staffers tampered with the game balls in the AFC championship game. The franchise countered that the deflation of the balls was an act of nature, not subterfuge. You were no doubt bored with the back-and-forth a long time ago. Forget deflate-gate, Seattle is visiting Minnesota on Sunday afternoon and the weather forecast calls for temperatures to hover around zero. If so, it could rank as one of the 10 coldest games in NFL history. The wind chill is expected to hit between minus-15 and minus-20. This could deliver the mother of all psi level drops. So how low should the air pressure go Sunday in the brutal chill of Minneapolis? Try about 9.0 psi. Maybe even into the 8s. Ignoring the wind chill (meaning the following is a conservative estimate, meaning the wind chill could make the on-field ball pressure even lower), the on-field ball pressure will be about 9 psig (assuming it was pressurized to 12.5 psig at 70F and measured on-field at 0F), Dr. Michael Naughton, the chair of the physics department at Boston College wrote to Yahoo Sports. Thats a low-pressure ball.
Click to expand...
About a point or two higher than your IQ is my guess.

 
It's like people didn't actually follow deflate gate or any of the following circumstances, like the NFL completely abandoning the science because it didn't support them.

 
It would be awesome if "whats his name" actually leaked the pressures being under.

 
Last edited by a moderator:
It's like people didn't actually follow deflate gate or any of the following circumstances, like the NFL completely understanding the science because it didn't support natural depressurization.

 
You're wrong moleculo. I know we've played this game at least ten times now, but you're wrong.

No one is corroborating exponents numbers. No on can recreate their science. Several universities have actually filed independent claims to the appeal process explaining how any discrepancy in the PSI between the two is entirely explained by atmospheric conditions.

No one is defending the NFL's claims, cause it was ####### joke.

 
Last edited by a moderator:
I do know that all of these pats tears as they still cry about this...would freeze in Minnesota tomorrow.

 
Steelers4Life said:
Cold temperatures don't cause the pressure to decrease. Changes in temperature cause the pressure to increase or decrease, slowly.

The temperatures during the Pats game last year were around 50 degrees. Tomorrow, it's expected to be about 50 degrees colder, so it'll likely be a far bigger impact on the PSI, depending where and when the balls are filled, what air is used, and what happens to the balls after they've been measured. If they're filled with cold air and the temperatures don't drop substantially during the game, it won't have a huge impact.

But, if a Vikings ball boy illegally takes them with him on a bathroom break, they might lose a little more pressure (wink, wink)

It's still amusing that Patriots fans still cry "Ideal Gas Law" as though it means something. It wasn't that cold during that game, and it takes a bit of time for the temperature change to affect the PSI of the footballs.
Click to expand...
Slowly?

You should read the Wells Report and take a look at the graphs. It is actually surprising how quickly the PSI changes. For example, the pressure could have changed by 1.0+ PSI just during the time half time measurements were being made. Wetness is also a factor...

 
rick6668 said:
Should be the same for both teams since the Pats aren't playing.
Click to expand...
Don't forget the QBs get to choose their starting pressure...

Just pointing that out because I find it really strange the league even lets the two teams use their own balls.

 
DropKick said:
Steelers4Life said:
Cold temperatures don't cause the pressure to decrease. Changes in temperature cause the pressure to increase or decrease, slowly.

The temperatures during the Pats game last year were around 50 degrees. Tomorrow, it's expected to be about 50 degrees colder, so it'll likely be a far bigger impact on the PSI, depending where and when the balls are filled, what air is used, and what happens to the balls after they've been measured. If they're filled with cold air and the temperatures don't drop substantially during the game, it won't have a huge impact.

But, if a Vikings ball boy illegally takes them with him on a bathroom break, they might lose a little more pressure (wink, wink)

It's still amusing that Patriots fans still cry "Ideal Gas Law" as though it means something. It wasn't that cold during that game, and it takes a bit of time for the temperature change to affect the PSI of the footballs.
Click to expand...
Slowly?

You should read the Wells Report and take a look at the graphs. It is actually surprising how quickly the PSI changes. For example, the pressure could have changed by 1.0+ PSI just during the time half time measurements were being made. Wetness is also a factor...
Click to expand...
There is nothing slow about it. As the temperature of the ball changes, so does its PSI. It's that easy. Basic science.

 
DropKick said:
Steelers4Life said:
Cold temperatures don't cause the pressure to decrease. Changes in temperature cause the pressure to increase or decrease, slowly.

The temperatures during the Pats game last year were around 50 degrees. Tomorrow, it's expected to be about 50 degrees colder, so it'll likely be a far bigger impact on the PSI, depending where and when the balls are filled, what air is used, and what happens to the balls after they've been measured. If they're filled with cold air and the temperatures don't drop substantially during the game, it won't have a huge impact.

But, if a Vikings ball boy illegally takes them with him on a bathroom break, they might lose a little more pressure (wink, wink)

It's still amusing that Patriots fans still cry "Ideal Gas Law" as though it means something. It wasn't that cold during that game, and it takes a bit of time for the temperature change to affect the PSI of the footballs.
Click to expand...
Slowly?

You should read the Wells Report and take a look at the graphs. It is actually surprising how quickly the PSI changes. For example, the pressure could have changed by 1.0+ PSI just during the time half time measurements were being made. Wetness is also a factor...
Click to expand...
I've always found wetness to be a factor, in most endeavors.

 
Will the NFL release the results to any of the random PSI testing throughout this year?

Probably not which makes the shield look like even more of a joke....

 
Last edited by a moderator:
I see the NFL leaking out PSI #'s that surprise? will be in their favor right before the Brady appeal after the season is over. I don't believe anything they put out unless there was a totally independent entity involved doing the testing of which there wasn't. What a joke. That's like letting Al Gore do his own climate change testing.

 
You must log in or register to reply here.

Similar threads

Bracie Smathers
Bracie Smathers April 22nd and final mock of 2013
Replies
28
Views
2K
Bracie Smathers
Bracie Smathers
Ministry of Pain
Exploit-Avoid Week 1
2
Replies
66
Views
5K
Curado Kev
C
Mark Wimer
  • Locked
2012 Preseason Injury Report: 8/29 Final update and revision
Replies
43
Views
11K
Mark Wimer
Mark Wimer

Users who are viewing this thread

Total: 2 (members: 0, guests: 2)
Back
Top