ch08-p022 - 22. We denote m as the mass of the block, h =...

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22. We denote m as the mass of the block, h = 0.40 m as the height from which it dropped (measured from the relaxed position of the spring), and x the compression of the spring (measured downward so that it yields a positive value). Our reference point for the gravitational potential energy is the initial position of the block. The block drops a total distance h + x , and the final gravitational potential energy is – mg ( h + x ). The spring potential energy is
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