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___________________?
Correct answer
C. 0.75J
Explanation
0.75J is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.