A 710 g block is dropped from a altitude h above a physics spring of spring constant 400 N/m. The block becomes attached to the spring, and momentarily comes to rest after compressing the spring by 18 cm. (a) What is the value of the initial height h? (b) What is the maximum height of the block in the block-spring system when it again comes to rest momentarily--the block remains connected to the spring? Measure from the equilibrium position of the spring

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