A horizontal uniform solid rod has a length l and mass m=2kg. It is supported by a pivot at its right end and by a cable a distance l/4 from its left end. The cable makes an angle theta=42 degrees with the rod and has a cross-sectional area A=3*10^-6 m^2. What is the tensile stress in the cable? ( You can ignore the cable's own mass.) a. 2.1*10^6 Pa b. 3.2*10^6 Pa c. 4.3*10^6 Pa d. 5.4*10^6 Pa e.6.5*10^6 Pa