13. (Force and Motion - I) Consider the system shown in figure with ma = 9.5 kg and mB = 11.5 kg. The angles 0A = 59 and B = 32. i Draw the free body diagrams for block A and block B. F ii In the absence of friction, what force F would be required to pull the masses at a constant velocity up? iii The force F now is removed What is the magnitude and direction of acceler- ation of the two blocks? ma iv In the absence of F, what is the tension in the string? Answer: ii) 140 N iii) = -6.7 m/s?i iv) 17 N