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Calculating elastic potential energy

A 3.2 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of this spring/mass system is 1.6 J. What is the elastic potential energy of the system when the 3.2 kg block is replaced by a 5.6 kg block?

Solution Summary

This solution is provided in 148 words in an attached .doc file. It uses equations, including mass and gravity acceleration, to find the potential energy in the system.