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A 20 lb block is dropped from rest at a height h 3.4 feet onto a set of springs. The two outer springs have an uncompressed length of 4 inches and a stiffness of 50 lb/in. The inner spring has an uncompressed length of 3 inches and a stiffness of 300 lb/in. Find the minimum height of the block after it is dropped (when it is momentarily at rest before rising again).

The block falls to a height of___inches before the springs cause it to rise.

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