What is the application of starting a gas turbine primarily related to?

The application of starting a gas turbine is primarily related to speed, velocity, and acceleration because these factors are crucial in bringing the gas turbine from a standstill to its operational speed. When starting a gas turbine, it is essential to rapidly accelerate the turbine components to achieve optimal rotational speeds, allowing the combustion process to initiate efficiently.

During this process, the initial speed at which the turbine spins is key to creating adequate airflow and fuel mixing in the combustion chamber, which are necessary for combustion to occur. Furthermore, achieving the correct velocity quickly also ensures that the turbine reaches the required operating conditions before it can provide thrust or electrical power effectively.

Understanding how speed, velocity, and acceleration interact helps to design efficient start-up procedures and monitor performance during the beginning phases of operation. Other options focus on aspects like inertia, which is relevant in maintaining motion but does not directly influence the start-up application, or force and mass or pressure and temperature, which might play roles in different contexts but are not the primary considerations during the initial starting phase of a gas turbine.