Required information Use the cantilever beam shown in the figure to answer the following questions. Force at joint A is 1000 lbf, and force at joint B is 600 lbf. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 18 Determine the maximum tensile bending stress using the following cross-section: hollow steel tube 3 by 2 in, outside dimensions, formed from 3/16-in material and welded. The maximum tensile bending stress max is psi.