A 2 in. by 4 in. rectangular steel bar is used as a diagonal tension member in a bridge truss. The diagonal member is 15 ft long, and its modulus of elasticity is 30,000,000 psi. If the strain in the diagonal member is measured as 0.0012 What is the tension force in the bar?

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.