Disk A has a mass m A = 4 kg, a radius r A = 300 mm, and an initial angular velocity 0 =

Disk A has a mass m_A = 4 kg, a radius r_A = 300 mm, and an initial angular velocity ω₀ = 300 rpm clockwise. Disk B has a mass m_B = 1.6 kg, a radius r_B = 180 mm, and is at rest when it is brought into contact with disk A. Knowing that μ_k = 0.35 between the disks and neglecting bearing friction, determine 

(a) The angular acceleration of each disk, 

(b) The reaction at the support C.

00 B A C TA