Cho điểm A có tọa độ X A; Y A; Z A; H overline a y vẽ đổ thức điểm A và xét xem điểm A thuộc góc phần tâm nào ? P. An 1 1 -2 2 2 -4 -2 3 3 -6 3 4 4 -2 -2 5 5 -5 10 6 -1 7 -2 -4 4 8 -3 -3 6 9 -4 2 -8 10 -5 Toa d hat 0; X A; T A; Z A -10

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.