Amass of 500 kg is lowered at a constant velocity of 0.2 m/sec by means of a rope. calculate the instantaneous stress induced in the rope if (a) the rope length is 2 m when all movement is stopped at the upper end of the rope; and (b) when the rope length is 6 m (e =210 gpa).

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.