The bar is 1m long and its weight, W, acts at its midpoint. The angle is a=30 degrees, and the the spring constant k= 100N/m. The spring in its current position is 1.52m long, and its unstretched length of 1.25 m occurs when the bar is vertical a=0. Knowing that for the position , the sum of the moments due to the weight and the spring force is exerted on the bar about ponit A is zero, determine the weight of the bar. Distance between two base is 0.75m.