22. We denote mas 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 xthe 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 distanceh+ x, and the final gravitational potential energy is –mg(h+ x). The spring potential energy is
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