If the poorly leveled crane of Prob. 4.41 can have any position α, where 0≤ α≤135°, determ...

If the poorly leveled crane of Prob. 4.41 can have any position α, where 0≤ α≤135°, determine the largest moment of the weight W = 5000 lb about line a and the position α that produces this moment. Assume h= 40 ft for any position a (this requires the operator to slightly change the boom’s height and/or length as the crane rotates about line a).

Figure P4.42