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When a small mass of 120g is attached to a vertical spring, the spring stretches by...

When a small mass of 120g is attached to a vertical spring, the spring stretches by 8.00cm where the small mass hangs at rest. The mass is then pulled down 3.00cm from its rest position and released so that the mass oscillates up and down. What maximum speed does the mass have during its oscillation?

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Ans is 367.875 cm/s

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