A 2.5-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of the spring/mass system is 1.8 J. What is the elastic potential energy of the system when the 2.5-kg block is replaced by a 4.2-kg block?
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A 2.5-kg block is hanging stationary from the end of a vertical spring that is attached to the ceili...
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