Find the lineаr аccelerаtiоn оf weight A with a mass оf [A]kg. It is connected by a light cable over a frictionless pulley to thin circular disk B with a mass of [B]kg, radius of [r]m. Use g=10m/s2 downwards to simplify the calculations. Answer in m/s2 with up+. Hint: Sum moments for the disk at the point of contact with the ground, watch signs in the kinematics.