University PHY please read details? A spring has a natural length of 0.343 m and

Question

University PHY please read details?

A spring has a natural length of 0.343 m and a spring constant of 735 N/m. How much clastic potential energy does the spring store with It Is compressed to a length of 0.194 m? 8.16 J 8.72 J 4.99 J 11.2 J 13.1 J 13.8 J 9.99 J 10.8 J Zero I'm not getting one of the answers listed above. However, I'm sure that I'm working it correctly. Please grade the work and answer that Is neatly presented In my green book. I don't know how to work this problem. Please take this problem to only be worth 1 point rather than 2 points.

Explanation / Answer

Here,

change in length , x = 0.343 - 0.194

x = 0.149 m

potential energy stored in the spring = 0.5 * k * x^2

potential energy stored in the spring = 0.5 * 735 * 0.149^2

potential energy stored in the spring = 8.16 J

the correct answer is a) 8.16 J

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