What is the displacement at D to the nearest 0.001 in? (HInt it is MD of the conjugate beam) Use negative and positive signs as appropriate. Don't forget UNITS P = 26 k L1 = 12 ft L2 = 6 ft L3 = 5 ft EI = 1,000,000 k-in2

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?