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civil engineering strength of materials
1. If a steel rod of 20 mm diameter and 5 metres long elongates by 2.275 mm when subjected to an axial pull of 3000 kg, the stress developed, is
(A): 9.5541 kg/cm2
(B): 95.541 kg/cm2
(C): 955.41 kg/cm2
(D): 9554.1 kg/cm2.
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