The a-36 steel axle is made from tubes ab and cd and a solid section bc. it is supported on smooth bearings that allow it to rotate freely. the tubes have an outer diameter of 30 mm and an inner diameter of 20 mm. the solid section has a diameter of 40 mm.

if the gears, fixed to its ends, are subjected to 85? n? m torques, determine the angle of twist of gear a relative to gear d.

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.