A helical compression spring with squared and ground ends is to be made of steel, and presetting is to be used. Assumed a

clash allowance of $12\mathrm{.}5\%.$ Assume that yield strength in shear is $60\%$ of the ultimate tensile strength.

What is the spring rate and the force required to compress the spring to its solid length?

For a static factor of safety of $1\mathrm{.}2,$ determine wire diameter, and the outer diameter of the coil. Spring index $C=8.$

Using the spring rate calculated from part $1,$ determine the number of active coils, the solid length, and the free length of the spring.

If the spring is to be supported between flat, parallel end plates, will the spring buckle? Why$/$why not?

Outline the procedure to obtain the Goodman factor of safety using Zimmerli data. No need for any calculations.