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Solution: A 0.7 kN/m spring has an elastic limit of 10 cm, meaning if ...

Question

A 0.7 kN/m spring has an elastic limit of 10 cm, meaning if it is stretched or compressed further than this, it will lose its elasticity. A 50 g mass with this spring attached to it is dropped from some height so the when it hits the ground, the spring is vertical and underneath the mass, allowing compression of the spring. What is the maximum height you can drop the mass from and not break the spring?