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A spring has a force constant of 904 N/m and an unstretched length of 6 cm. One end is attached to a post that is free to rotate in the center of a smooth table. The other end is attaced to a 3 kg disk moving in uniform circular motion on the table, which stretches the spring by 1 cm. Note: Friction is negligibe. What is the work done on the disk by the spring during one full circle?

1) W = 0.0019564 J 2) W = 1.704 J 3) W = 0 J
4) W = 0.5424 J 5) W = 3.408 J

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