Question 2 (35%) A bevel pinion and ground finished shaft are shown in Figure. Bearing at A will fully support the axial load, Fa. The left end of the shaft is coupled to an electric motor, and the right end is free. Load components applied by the mating bevel gear are shown. F,= 2.4 KN F,= 4.0 KN 125 mm 50 mm Figure Q2 F = 1.5 kN Note: Gear forces act at a 75-mm radius from shaft axis. (i) Find the magnitudes of the bearing reaction forces at A and B, assuming the bearings act as simple supports. (ii) Draw shear-force and bending-moment diagrams for the shaft. If needed, make one set for the horizontal plane and another set for the vertical plane. (iii) Calculate all stresses at the shaft critical point. Identify both mean (static) and alternating stresses. (iii) If the material properties are S₁ = 900 MPa and Sy = 700 MPa, determine the safety factors guarding against fatigue and yield failures. PO1 5 marks PO1 8 marks PO2 8 marks P02 14 marks

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question 2 35 a bevel pinion and ground finished shaft are shown in fi

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Question 2 (35%) A bevel pinion and ground finished shaft are shown in Figure. Bearing at A will fully support the axial load, Fa. The left end of the shaft is coupled to an electric motor, and the right end is free. Load components applied by the mating bevel gear are shown. F,= 2.4 KN F,= 4.0 KN 125 mm 50 mm Figure Q