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A wire suspended vertically from one end is stretched by attaching a weight of 20N to the lower end. The weight stretches the wire by 1mm. How much energy is gained by the wire ?

/ Physics Mcqs, Physics Of Solids / By
A wire suspended vertically from one end is stretched by attaching a weight of 20N to the lower end. The weight stretches the wire by 1mm. How much energy is gained by the wire ?

A. 0.01J
B. 0.02J
C. 0.04J
D. 1.0J