Bearing reactions R1 and R2 are exerted on the shaft shown in the Figure 2, which rotates at 1120 rev/min and supports a 45 kN bending force. Use 1095 HR steel. Specify a diameter d using a design factor of nd = 1.6 for a life of 3 min. The surfaces are machined. F = 45 kN -300 mm 150 mm 150 mm d/5 R. 1.5 d- R d d/10 R. 25 mm-> Figure 2 Bearing reactions R1 and R2