Dynamics of Motor-Load Combination (Cont.)

How to refer the forces and masses having translation motion to a rotating shaft?

• In applications like hoists, cranes and shaping machines will have some of the moving parts rotate while others go through a translational motion.
  

• If the moving mass has a velocity of v m/sec, motor shaft has an angular velocity is the resistive force developed by the load due to gravitational pull of the moving weight the efficiency of transmission.