Since the mass hanger is in equilibrium, I can draw the following force diagram: Because the object ... How does this get you spring potential energy? Ok. Let me go to the case where the block ...

or GPE). The amount of gravitational potential energy an object has on Earth depends on its: mass; height above the ground. In the diagram: all the books on a shelf have GPE; books A and B have ...

They then interpret a heating curve and potential energy diagram and compare endothermic and exothermic changes.