The 33-lb double pulley shown is at rest and in equilibrium when a constant 3.5-lb·ft couple M is applied.





Neglecting the effect of friction and knowing that the radius of gyration of the double pulley is 6 in., determine the angular acceleration of the double pulley assuming that A = 26 lb and B = 13 lb.

(You must provide an answer before moving on to the next part.)





Angular acceleration of the double pulley =
rad/s2