6-85. Determine, to the nearest millimeter, the smallest allowable diameter of the shaft which is subjected to the concentrated forces. There is a journal bearing at A and a thrust bearing at B. The allowable bending stress is Jallow = 150 MPa. 12 kN 0.5 m A 0.4 m 20 kN Probs. 6-84/85 0.6 m-
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