Consider the Atwood system shown below in the figure. Treat the pulley as a disk of mdisk = 1 kg and radius r = 30 cm. The hanging masses are of masses m1 = 5 kg and my = 9 kg, respectively. Calculate the angular acceleration (a) of the disk. (Hint: Remember the tensions T1 and T2 are not equal!) ml m2 9.02 rad/52 O 2.71 rad/s2 8.72 rad/52 O 31.6 rad/52