Question 152 In Figure B2, 3 block of mass m = 5 kg is sliding along a oor while a force of magnitude 20 N is applied to it at an upward angle 6 that can be varied from 0 to 90, as shown in Figure 32. The coefcients of static and kinetic frictions between the block and the oor are ,u, = 0.4 and m = 0.35 respectively. Figure 82 (a) Draw a free-body diagram of the block. (6 marks) (b) Compute the angle 6 that gives the maximum acceleration of the block. (12 marks)