The crane consists of three parts, which have weights of W1, = 3500 lb, W2 = 900 lb, W3 =...

The crane consists of three parts, which have weights of W1, = 3500 lb, W2 = 900 lb, W3 = 1500 lb and centers of gravity at G1, G2, and G3, respectively. Neglecting the weight of the boom, determine (a) the reactions on each of the four tires if the load is hoisted at constant velocity and has a weight of 800 lb, and (b), with the boom held in the position shown, the maximum load the crane can lift without tipping over.