A helical spring is made from rectangular wire of 1/2 × 1/4-in. cross section, with the narrow side parallel to the helix axis. Mean helix radius is 1.5 in. The static load is 150 lb.
(a) Find the value of the maximum stress, and the deflection, if the number of active coils is eight.
(b) Repeat part (a) with the spring wound with the long side of the cross section parallel to the axis.
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