Areinforced concrete beam must support a design (factored) moment, mu, of 50 k-ft. the beam dimensions are 8" wide x 16" deep, and the beam is reinforced with (2) #6 bars for flexure. the nominal strength of the concrete, f’c, is 8,000 psi, and the steel is a615, gr. 60 (fy = 60 ksi). assume an effective cover for the longitudinal bars approximately equal to 3". determine and explain whether this design is acceptable for flexure. justify your response with supporting calculations, including a verification of the ϕ factor you use for your calculation of design strength.