Using the method of Sec. 10.8, solve Prob. 10.30. Problem 10.30: Two bars AD and DG are connected by a pin at D and by a spring AG. Knowing that the spring is 300 mm long when unstretched and that the constant of the spring is 5kN/m, determine the value of x corresponding to equilibrium when a 900-N load is applied at E as shown.

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2 200 mm 400 mm 900 N -200 mm -200 mm 200 mm