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A force of 10N stretches a spring that has a spring constant of 20N/m. The potential energy stored in the spring is: 

(A) 2.5 J 

(B) 5.0 J 

(C) 10 J 

(D) 40 J 

(E) 200 J

1 Answer

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Best answer

Correct option (A) 2.5 J

Two step problem. Do F = k∆x, solve for ∆x then sub in the Usp = ½k∆x2 

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