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A spring of force constant 800N//m has a...

A spring of force constant `800N//m` has an extension of 5cm. The work done in extending it from 5cm to 15cm is

A

16 J

B

8 J

C

35 J

D

24 J

Text Solution

Verified by Experts

The correct Answer is:
B
`W=1/2 xx800(0.15^(2)-0.05^(2))=8J`
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