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A mass of 0.3 kg hangs motionless from a vertical spring whose length is 0.83 m...

A mass of 0.3 kg hangs motionless from a vertical spring whose length is 0.83 m and whose unstretched length is 0.54 m. Next the mass is pulled down to where the spring has a length of 1.03 m and given an initial speed upwards of 1.4 m/s. What is the maximum length of the spring during the motion that follows?

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