9. The Spring has sprung. An unknown mass is attached to a spring of unknown stiffness that when stretched to 0.25 m, a
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9. The Spring has sprung. An unknown mass is attached to a spring of unknown stiffness that when stretched to 0.25 m, a
9. The Spring has sprung. An unknown mass is attached to a spring of unknown stiffness that when stretched to 0.25 m, a force scale measures a force of 175 N. If the spring and mass is stretched to 0.45 m and let go to oscillate, the period is measured to be 1.8 seconds. Find the kinetic energy of the mass when it is at 0.25 m.
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