The mobile crane has a weight of 120000 lb and center of gravity at G1; the boom has a wei...

The mobile crane has a weight of 120000 lb and center of gravity at G1; the boom has a weight of 30000 lb and center of gravity at G2. If the suspended load has a weight of W = 16000 lb, determine the normal reactions at the tracks A and B. For the calculation, neglect the thickness of the tracks and take θ = 30°.