Please solve the attached questions and provide all steps and working with a free body diagram for both bodies. There are two questions in total and both correspond to the provided diagram. Thank you so much for your time and effort.

' Export PDF O Adobe Export PDF B 0.8 kg Convert PDF Files to Word 1.2 kg or Excel Online Select PDF File 9709_s18_qp_41.pdf 450 30 Convert to Microsoft Word (".docx) The diagram shows a triangular block with sloping faces inclined to the horizontal at 45 and 30. Particle A of mass 0.8 kg lies on the face inclined at 45 and particle B of mass 1.2 kg lies on the face Document Language: inclined at 30. The particles are connected by a light inextensible string which passes over a small English (U.S.) Change smooth pulley P fixed at the top of the faces. The parts AP and BP of the string are parallel to lines of greatest slope of the respective faces. The particles are released from rest with both parts of the Convert string taut. In the subsequent motion neither particle reaches the pulley and neither particle reaches the bottom of a face. Flit PDF (i) Given that both faces are smooth, find the speed of A after each particle has travelled a distance of 0.4 m. [6] Convert, edit and e-sign P forms & agreements Free 7-Day Trial 13 (ii) It is given instead that both faces are rough. The coefficient of friction between each particle and a face of the block is u. Find the value of u for which the system is in limiting equilibrium. [6]