Consider heavy object of mass m3=152 kg moves on horizontal plane by applying force Fa to rotor system (contains two disks) with inner disk (m2=2.5 kg, R2=0.22 m) and outer disk (m1=4.5 kg, R1=0.47 m). Plane has a kinetic friction coefficient =0.18. a) Find the applied force when object move with constant velocity? b) Find the angular acceleration of the rotor when applied force increases 15% (of part a) and the m3 moves with constant acceleration?