1 A steel helical spring carries a
compressive load of 32.4 pounds at a deflection of 0.25 inches.
Maximum stress is 73240psi. The spring has 1.5 end turns. Calculate
the value of c for the spring of minimum volume material.
Calculate the value of d and choose the nearest standard
wire diameter for the actual spring. Calculate the corresponding
R and the number of active coils Nc.
Also, calculate the material in the spring.