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A spring (k = 600 N/m) is placed in a vertical position with its lower end...

A spring (k = 600 N/m) is placed in a vertical position with its lower end supported by a horizontal surface. The upper end is depressed 20 cm, and a 4.0 kg block is placed on top of the depressed spring. The system is then released from rest. What is the maximum speed of the mass?

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