Which unit of measurement is NOT commonly used for torque?

The unit of measurement that is not commonly used for torque is Joule-meters. Torque is a measure of rotational force, typically expressed in terms of force multiplied by the distance from the pivot point or axis of rotation. The common units for torque include inch-pounds, foot-pounds, and Newton-meters.

Inch-pounds and foot-pounds are standard units used predominantly in the United States, where inch-pounds denote torque values based on inches as the distance and pounds as the force. Foot-pounds represents a similar concept but uses feet as the distance unit.

Newton-meters is the metric unit for torque, which is widely used in scientific and engineering contexts, especially outside of the United States. It represents torque as the product of a force of one Newton applied at a distance of one meter from the pivot point.

Joule-meters, on the other hand, is not a standard unit for torque. Joules measure energy or work done, while meters measure distance. Although there is a relationship between torque and energy (since torque can be expressed in terms of work), Joule-meters is not recognized as a unit of torque, making it an outlier among the options presented.