Pulleys and block-and-tackles are often used to hoist objects into the upper levels of barns and garages. The supports that hold these contraptions come in various forms. Let us model the illustrated orange support as a planar truss with horizontal member that is subjected to the vertical tension load . Given the following: 90 N cm cm determine forces , , and in N in members , and . Matlab input: T = 90; AB = 100; AC = 140; theta = 15; N N N

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

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.