modelling of an Electric Pulley

I want to model an electric pulley that will be powered by a battery I modelled. The pulley will be in simulation, lifting various mass load and I would like to obtain its drive cycle over a certain period of time. I have currently used DC motor model to get the force produced by the motor which is added with the tension caused by the mass under gravity using the summation block. the output of the summation block is connected to 2 integrators to get velocity and displacement of the system. I then tried to multiply the output of the summation block(The tension on the rope) with the velocity top get power but I don't seem to get the right result

[Joel Van Sickel]

you will need to share a model to get help with this type of problem and provide screen shots showing why the results are incorrect.