Dynamics of Motor-Load Combination (Cont.)

• The load torque referred to the motor shaft is,
  
  
  
  where, F is the resisting force applied by the part which undergoes translational motion, i is the gear ratio and is the efficiency of transmission.
  
  
• For the mechanism having crankshaft, the equation of motion will be,
  
  
• Kinetic energy stored in the crankshaft