(a) Using the Euler method, in two iterations, compute the moving end displacement of a strut. The strut is attached to a linear spring as shown in Figure Q1. For the calculations, assume F=20 N, EA-5x10 N, yo=0.025 m, =2.5 m, K=0.135 kN/m and AF=10 N. The nonlinear relationship between the force Fand displacement y is given by EA F(y) = (vy + voy + y) + Ky (5 marks) Figure Q1 (b) Discuss the accuracy of the computation using the Euler's method for part (a). Iterate back from the deformed position to F=0 N in one iteration and comment on the error. [3 marks) (c) Explain the Newton-Raphson method and discuss how this should be applied to compute the displacement for part (a). (2 marks)