Ashaft which rotates at a constant speed of 160 rpm is connected by belting to a parallel shaft 0.72 m apart which has to run at 60, 80 and 100 rpm. the smallest pulley on the driver is 40 mm in radius. determine the remaining radii of the two stepped pulleys for (i) a crossed belt (ii) an open belt. neglect belt thickness and slip.

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.