Figure Q3(b) shows a uniform bar AB of mass = 8 kg hinged at point C. Point A is connected to a spring to maintain the bar in vertical direction, and the stiffness k = 500 N/m. If point A is displaced...

Figure Q3(b) shows a uniform bar AB of mass = 8 kg hinged at point C.
Point A is connected to a spring to maintain the bar in vertical direction, and the stiffness k = 500 N/m. If point A is displaced counter-clockwise by a small angle θ = 3.5 degree and released,

With the free body diagram and kinetic diagram, determine the initial
horizontal displacement of A. Then determine the period of vibration, the maximum velocity and acceleration at point A.

p.s. This question was previously answered but because the solution images were unable to view I need to re-ask this question