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1. |
A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 5m long. What is the strain energy in the rod if the load is applied suddenly (E = 2 105 N/mm2)? |
A. | d143.23 N-m |
B. | 140.51 N-m |
C. | 135.145 N-m |
D. | 197.214 N-m |
Answer» B. 140.51 N-m | |