| Rack & Pinion |   | 

 
| Symbol | Description | Units | 
|---|---|---|
| JDM | Inertia of drive mechanism | kg-m2 | 
| TDM | Torque of drive mechanism | Nm | 
| aDM | Rotational acceleration | rad/s2 | 
| h | Efficiency of drive mechanism | 1 | 
| q | Incline angle above horizontal | o | 
| g | Acceleration due to gravity = 9.81 | m/s2 | 
| m | Rack friction coefficient | |
| mLoad | Mass of load + payload | kg | 
| mCB | Mass of counterbalance | kg | 
| mRack | Mass of rack | kg | 
| rPinion | Radius of pinion | m | 
| mPinion | Mass of pinion | kg | 
| JPinion | Inertia of pinion | kg-m2 |