A wire suspended vertically from one of ...

A wire suspended vertically from one of its ends is stretched by attaching a weight of 200 N to the lower end. The weight stretches the wire by 1 mm. Then the elastic energy stored in the wire is :

0.2 J

10 J

20 J

0.1 J

Text Solution

Verified by Experts

The correct Answer is:

Work done =`1/2`Stress `xx` Strain `xx` Volume
`=1/2` Force `xx` extension
`=1/2xx200xx1xx10^(-3)=0.1J`
Thus correct choice is (d).

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