1.

A uniform steel wire of length 4m and area of cross-section 3×10-6m2 is extended by 1mm by the application of a force. If the youngs modulus of steel is 2×1011 Nm-2 the energy stored in the wire is___________________?

A. 0.025J
B. 0.50J
C. 0.75J
D. 0.100J
Answer» D. 0.100J


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