A spring is attached to the bottom of an empty swimming
Chapter , Problem 52(choose chapter or problem)
A spring is attached to the bottom of an empty swimming pool, with the axis of the spring oriented vertically. An 8.00-kg block of wood (r 5 840 kg/m3 ) is fi xed to the top of the spring and compresses it. Then the pool is fi lled with water, completely covering the block. The spring is now observed to be stretched twice as much as it had been compressed. Determine the percentage of the blocks total volume that is hollow. Ignore any air in the hollow space.
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