$4\mathrm{.}4.$ Calculate the cracking moment based on the gross

section properties. The beam is reinforced with two No$.$

$10$ bars, with $f_y$:$=60000$ psi. The concrete

compressive strength is $f_c^{\text{'}}$:$=3000,$ and has a

tensile capacity of $7\mathrm{.}5\sqrt[\phantom{2}]{f_c^{\text{'}}}$