MadSci Network: Physics
Query:

Re: How does the temperature of a football affect how catchable it is?

Date: Thu Mar 31 13:20:43 2005
Posted By: Norm from Georgia, Staff, Materials Engineer, U S Air Force Materiel Command
Area of science: Physics
ID: 1109188676.Ph
Message:

I really don't have a good "feel" for this question:

On one hand, so to speak, a heated ball should increase in pressure, and 
thereby be rather "bouncier," which could make it harder to catch.  And, 
if hot enough enough, it may be less pleasant to catch with your bare 
hands.

But, on the other hand, depending on the material, the outer surface may 
be just a little more pliable, so that it can be caught and held, better, 
and may even be a mite "stickier," which may also be of help.

There may be some effect on the ball's actual flight, both on its 
rigidity of shape, which would give it more stable aerodynamics, and even 
some bouyancy in air, allowing to "hang" a little longer and be caught 
(or deflected) easier.

Or, conversely, none of these effects may be noticed in the 
temperature/pressure range of a ball in play.

Probably the temperature of the player is much more important than that 
of the ball.


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