The following explanations describe how the required capacity for a motor can be calculated. We explained here is a basic equation in a general circumstance.
Hence, when selecting a motor in reality, the following points should be taken into consideration. The acceleration at starting time, the power required for an instantaneously imposing large load, or the safety measures implemented at design and manufacturing levels, and the impact of changing voltage.

1. Rolling Up a Load

2. Operation Inertia Mass

3. Belt Conveyor

4. Moving An Object Horizontally On The Surface

5. Driving a Ball Screw