A spring when compressed by 4 cm has 2 J...

A spring when compressed by `4 cm` has `2 J` energy stored in it. The force requried to extend it by `8 cm` will be

20 N

2 N

200 N

2000 N

Text Solution

Verified by Experts

The correct Answer is:

`(3)`

`U = 1/2 Kx_(1)^(2) Rightarrow K = 2U/x_(1)^(2) and F= Kx_(2)`

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