SOLUTION: The distance (d) a spring will stretch varies directly as the force (F) applied to the spring. If a force of 12 lb is required to stretch a spring 3 in., what force (in lb) is requ

Question 1197038: The distance (d) a spring will stretch varies directly as the force (F) applied to the spring. If a force of 12 lb is required to stretch a spring 3 in., what force (in lb) is required to stretch the spring a = 9 in.?

F=________?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!


Hi
 The distance (d) a spring will stretch 
varies directly as the force (F) applied to the spring. 
d varies directly as F
That is:  d = kF
d = 3in when F = 12 lb
   3in= k (12lb),  
find F when d = 9in 
      d = kF  0r  F = d/k
                  F =  = 36 lb
Wish You the Best in your Studies.

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