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The spring in a marble launcher is compressed 0.080 m by a marble of mass 0.0051 kg and is locked in. The launcher makes an

 The spring in a marble launcher is compressed 0.080 m by a marble of mass 0.0051 kg and is locked in. The launcher makes an angle of 62o with the horizontal. The spring is released and the marble exits the launcher. How much did the GPE of the marble change as it moved from the compressed to the released position of the spring (x = 0.080 m) along the barrel of the launcher?

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