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A 2.4 kg block is placed against a spring on a frictionless 17^{o}incline. The spring, whose spring constant is 59.2 N/cm , is compressed 35.3 cm and then released.

What is the elastic potential energy of the compressed spring in J?

According to my calculations and my book, the potential energy of a spring is .5kx^{2}. That didn't work, so I converted cm to m in k and x. That didn't work either. The only difference between this problem and a similar one in the book is that this spring is at an angle. Could someone give me a hint as to what the trick with this problem is?

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# Potential Energy of a Spring

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