Follow the explanations of how an electric motor by force to rotate the shaft

So que an electric motor can rotate in the correct axis, he must have some effort and not simply Set the force used, then we can say that is not enough to define the force used: one must also know how far from the center axis force is applied, this effort is measured by the conjugate, which is the product of force by the distance to calculate the energy and mechanical power. baldor vl3504

The power applied Measures the rate at Which power is applied or consumed by the motor, so for example if one if the well is 25.5 meters deep, the energy expended to bring the bucket from the bottom to the well mouth is always the same, this Amounts to 20 x 25.5 m N = 510 Nm. With this it is noted que the mechanical energy measurement unit, Nm, is the same as used for the electric motor torque, and it comes however, quantities of different nature, which should not be never confused.