Aheavy rope, 50 ft long, weighs 0.4 lb/ft and hangs over the edge of a building 140 ft high. approximate the required work by a riemann sum, then express the work as an integral and evaluate it. how much work w is done in pulling the rope to the top of the building?

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.