A 10-ft-long rigid beam is supported by a steel rod and pinned connection as shown. It car...

A 10-ft-long rigid beam is supported by a steel rod and pinned connection as shown. It carries a 10-kip/ft uniformly distributed load across its entire length. The beam weighs 120 lb/ft. Tensile stress in the steel rod must not exceed 20 000 lb/in2. Neglecting the weight of the cable, determine the minimum diameter of the steel rod to the closest -in increment  without exceeding the maximum specified tensile stress.