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A wire extends by 'l' on the application...

A wire extends by `'l'` on the application of load `'mg'`. Then the energy stored in it is

A

`Mgl`

B

0

C

`Mgl//2`

D

`2Mgl`

Text Solution

Verified by Experts

The correct Answer is:
C
Mechanical work done = Energy stored
`=(1)/(2)xx` Extension `xx` Restoring force
`=(1)/(2) xx l xx mg=(mg l)/(2)`
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