Exercise 9 The two blocks (A) and (B) of respective masses mA = 2 kg and mg = 4 kg, that are shown in the adjacent figure are attached to each other by means of a string that passes over a massless pulley. Th coefficient of friction between (A) and (B) is ₁ = 0.2 and that between (B) and the ground is = 0.1. Block B is pulled by a force that result in an acceleration of block B of magnitude a = 0.5 m/s². Determine during the motion of the two blocks the tension of the string and the value of F.