----- Original Message -----=20
  From: ChrisAtUpw@..........
  To: psn-l@.................
  Sent: Thursday, November 30, 2006 16:43
  Subject: Re: Zero-length spring


  In a message dated 2006/11/30, tchannel@.............. writes:


    I think its k that I am unclear of.=20


  Hi Ted,

         'k' is the force constant of the spring in say, pounds per inch =
of stretch. This is constant until you get to very large extensions =
which change the spiral.

         An example of a zero length spring is an ordinary clock spring =
when you pull it along it's shaft axis.=20

         Regards,








 

  
----- Original Message ----- 
  From:=20
  ChrisAtUpw@....... 
  
To: psn-l@.............. 
  
Sent: Thursday, November 30, =
2006=20
  16:43
  
Subject: Re: Zero-length =
spring
  

In a=20
  message dated 2006/11/30, tchannel@..............=20
  writes:


  I think its k that I am unclear of. =


Hi=20
  Ted,

       'k' is the force =
constant of=20
  the spring in say, pounds per inch of stretch. This is constant until =
you get=20
  to very large extensions which change the=20
  spiral.

       An example of a =
zero=20
  length spring is an ordinary clock spring when you pull it along it's =
shaft=20
  axis. 

      =20
  Regards,

       Chris =
Chapman=20