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A wire suspended vertically from one end...

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

A

0.01 J

B

0.02 J

C

0.04 J

D

1 J

Text Solution

Verified by Experts

The correct Answer is:
A
`W=(1)/(2) f xx l=(1)/(2) xx 20 xx 10^(-3)`
`=0.01J`.
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