A block is hung from a vertical spring. The sprint stretches (h = 0.0650 m) as shown for a particular instant in time in Figure. Consider the Earth, spring, and block to be in the system. If m = 0.865 kg and k = 125 N/m, find the change in the system's potential energy between the two times depicted in the figure.
![1444_A block is hung from a vertical spring.png](https://secure.tutorsglobe.com/CMSImages/1444_A block is hung from a vertical spring.png)