QUESTION 5 A body A of mass 5 kg rests on a rough surface inclined at 50 to the horizontal. One end of a light inextensible string was attached to A. The string passes over a smooth pulley, and the other end was attached to a body B of mass 6 kg which hangs freely. Find the normal reaction on A and the coefficient of friction (use g = 9.81ms*). (5 marks) 50 A B QUESTION 6 An object of mass 38 kg is on a horizontal rough surface. The coefficient of friction between the object and the surface is k = 0.25. A pulling force F that makes an angle of 50 with the horizontal is applied to the object causing it to accelerate horizontally at 3 ms. Determine the magnitude of F and the normal force. (6 marks)