Question a spring gun is compressed 30 cm and is held in, Ask an Expert

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Question: A spring gun is compressed 30 cm and is held in place by a trigger. The spring mechanism is pushing against a marble of mass 10 grams. The spring constant is 300 N/m. The gun is aimed straight vertically upward and the trigger is released.

Part A- What is the maximum height reached by the center of mass of the marble above its initial position before it falls back due to the force of gravity?

If possible just a brief explanation how you got the answer? Thanks.

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