A certain force F applied at D near the end of the 15-in lever shown in the below figure, which is quite similar to a socket wrench, results in certain stresses in the cantilevered bar OABC. This bar (OABC) is of AISI 1035 steel, forged and heat-treated so that it has a minimum (ASTM) yield strength of 81 kpsi. We presume that this component would be of no value after yielding. Thus, the force F required to initiate yielding can be regarded as the strength of the component part. Find the force. 2 in. 14-in D. A -in R. D 12 in 1-in D. 15 in LL F B 2 in 1-in D.