Lifter / elevator system in phisical model with simscape

Goodmorning, I neet to realize an elevator system with Matlab and Simscape / Simulink. I have the electric and mechanical dynamic in simulink for the motor and now have to realize the [S PS] blok using

  • ideal angular velocity source
  • gear box
  • inertia
  • ideal torque sensor (why I need a rotactional friction just before this sensor?)

in order to simulate the elevator I tought to use "wheel and axle" and two masses (cabin and balance)

thanks to all that can help me