Resumen de A More General �U mgh�
In problems dealing with the Earths gravity, students are frequently bewildered by the fact that the two common expressions for potential energy, mghand -Gmemr, differ in sign and differ considerably in form. Some textbooks demonstrate that the more familiar first expression is a special case of the more general second equation providing that an object is near to the Earths surface.1�2In this paper I derive an equation that resembles the familiar U mghbut that applies to an object of mass mat any height habove the Earths surface.
