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Two springs with the same spring constant are installed in
Chapter 3, Problem 221HP(choose chapter or problem)
Problem 221HP
Two springs with the same spring constant are installed in a massless piston/cylinder arrangement with the outside air at 100 kPa. If the piston is at the bottom, both springs are relaxed, and the second spring comes in contact with the piston at V = 2 m3. The cylinder (Fig. P3.221) contains ammonia initially at −2°C, x = 0.13, V = 1 m3, which is then heated until the pressure reaches 1200 kPa. At what pressure will the piston touch the second spring? Find the final temperature, the total work done by the ammonia and the heat transfer.
FIGURE P3.221
Questions & Answers
QUESTION:
Problem 221HP
Two springs with the same spring constant are installed in a massless piston/cylinder arrangement with the outside air at 100 kPa. If the piston is at the bottom, both springs are relaxed, and the second spring comes in contact with the piston at V = 2 m3. The cylinder (Fig. P3.221) contains ammonia initially at −2°C, x = 0.13, V = 1 m3, which is then heated until the pressure reaches 1200 kPa. At what pressure will the piston touch the second spring? Find the final temperature, the total work done by the ammonia and the heat transfer.
FIGURE P3.221
ANSWER:
Solution
Step 1 of 4
In this problem, we have to find the final temperature and also the total work done by the ammonia.