1. A V-belt drive with an included angle of 34° is to have a capacity of 15 kW based on a coefficient of friction of 0.2 and a belt weight of 2.5 N/m. Determine the required maximum belt tension at full load. Assumptions: The driver is a normal torque motor and the driven machine involves heavy shocks. Design Decision: Speed is to be reduced from 2700 to 1800 rpm using a 200 mm diameter small sheave: shafts are 500 mm apart.

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.