The drum A is given a constant angular acceleration ao of 3 rad/s and causes the 70-kg spool B to roll on the horizontal surface by means of the connecting cable, which wraps around the inner hub of the spool. The radius of gyration k of the spool about its mass center G is 250 mm, and the coefficients of friction between the spool and the horizontal surface are = 040 and = 0.08. Determine the tension T' in the cable and the friction force F exerted by the horizontal surface on the spool. do 250 mm O B 450 mm, 150 mm H