It is concluded through the main concept of power, that it has as its main function to measure the speed with which the energy is properly consumed or applied. The energy expended or the labor dispensed so that it is feasible to lift an object, for example, will always be the same, however, the power diagnoses the speed with which this energy is applicable to be able to effectively raise the object, that is, the power it is nothing more than the total energy or labor effected, divided by the total time necessary to accomplish it. In this way, the unit used for mechanical power is watt (W), however, the most usual unit for mechanical power is c.v., short for horsepower, equivalent to 736W.
Although the energy is one, it has the possibility of being achieved in different ways. If a resistor is connected to a mains with voltage, an electric current will pass that can heat the resistance. In this way, the resistance becomes capable of absorbing the energy and, consequently, of transforming it into heat, which is also considered a form of energy. An electric machine can absorb electrical energy from the grid and transform it into mechanical energy available at the tip of the shaft. https://www.mrosupply.com/synchronous-belts/14mm-pitch/2233494_14mgt-1568-37_gates-rubber/