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___________________?

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Academy of PakistanTest & Learning

804Active Users

391PhysicsMedium

A0.50J

B0.100J

C0.75J

D0.025J

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.

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___________________? - Answer and Explanation | Academy of Pakistan