Pls fast hand written solution
Extracted text: A helical extension spring is made of 1/8-in music wire A228 (E = 28.5 Mpsi, G = 11.75 Mpsi, Sut = 271 kpsi). The mean diameter of the spring body is 1.0 in (spring index 8). The initial tension is 10 lbf. The maximum external load that the spring can sustain to avoid the yielding of the body is: 26 lbf O 70 Ibf O 167 Ibf O 628 Ibf