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Lab ActivitiesLooks at the elastic properties of (1) springs, (2) a copper wire and (3) a rubber tube. In part (1) the student measures the spring constants for (a) three single springs, (b) a two spring system where the springs are hung in parallel and (c) a two spring system where the springs are hung in series. In part (2), the student measures Young's modulus for copper and prepares a stress vs. strain graph from the data; on the graph the students identify the elastic region, the elastic limit, the plastic region, the region of creep and the fracture point. In part (3), the student measures Young's modulus for rubber and prepares a stress vs. strain graph; on the graph the student identifies the area of hysteresis. Course Level
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