From: am@yellowjersey.org   
      
   On 5/2/2020 7:50 PM, thekmanrocks@gmail.com wrote:   
   > Arlen Holder:   
   >   
   > So rounded off we'll just say 270 sq. inch of area inside the avg. passenger   
   > tire.  I think something was wrong with that online calculator I was using   
   last   
   > night to convert square mm to square inches.  For a similar tire I was   
   getting,   
   > if I recall,1,220-something square inches?  I suspected something was off!   
   >   
   > So the air inside the tire inflated to 35psi is pressing down on each one of   
   > those 270 square inches with 35 lbs of force. So a more sane 9,450lbs of   
   > total pressure on the inside wall of that tire.  Probably closer to 7,000ish   
   if   
   > you consider that side of the rim which completes the inside of that total   
   air   
   > cavity at each corner of our daily vehicles.   
   >   
      
   I don't know but it cannot be 270 square inches ( which is   
   roughly 10" x 27". I can see a ten inch width bead to bead   
   but the circumference is way beyond 27 inches.   
      
   Regardless of arithmetic, the pneumatic (or hydraulic,   
   formulae are the same for these purposes) pressure at every   
   place within a closed figure is equal and all of it will be   
   35psi.   
      
   --   
   Andrew Muzi   
        
     Open every day since 1 April, 1971   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)