A tensile load of 60kN is gradually applied to a circular bar of 4cm d – McqOptions

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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‚Äö√†√∂‚àö‚â•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

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