What is an alternative name for Running Torque?

Running torque refers to the torque required to keep a mechanical system operating once it has already been set in motion. This is often influenced by factors such as friction, load conditions, and the overall design of the system. The term "prevailing torque" is used synonymously with running torque because it represents the amount of torque that must be overcome to maintain motion against these forces once the system has started moving.

This contrasts with other torque concepts like static torque, which refers to the torque needed to overcome inertia and get a system moving from a standstill; and starting torque, which is specifically the initial torque applied to begin motion. Final torque does not adequately capture the continuous aspect of maintaining motion, which is central to the definition of running torque. Understanding these distinctions highlights why "prevailing torque" is the most appropriate alternative name for running torque, as it embodies the concept of torque persisting during operation.