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A piston-cylinder device with a piston surface area of 0.1m^2 is initially filled with 0.05m^3 of air at the local atmospheric pressure and temperature, 100kPa and 20 degrees C, respectively. Now cold water is poured outside the cylinder, cooling the air temperature to 10 degrees C; however, the piston remains stuck at its inital position. Assume CPIG.
1. Find the friction force acting on the piston.
2. Find the heat transfer for the process.
Determine if the shaft has infinite fatigue life. If not, determine the number of cycles to failure. Also determine the safety factor for first cycle yield and draw a free body diagram, shear and moment diagrams, and graph the loads on the shaft..
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Important information about Multipal choice question on mechanics, A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine?
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