What unit measures torque in the International System of Units (SI)?

Torque is a measure of the rotational force applied to an object, and in the International System of Units (SI), the unit for torque is the Newton-meter. This unit consists of a Newton, which is the unit of force, multiplied by a meter, which is the unit of distance. When you apply a force at a certain distance from a pivot point, the resulting torque is calculated by multiplying the force applied (in Newtons) by the distance from the pivot point to where the force is applied (in meters). This makes the Newton-meter a natural choice for measuring torque in the SI system.

Using other units like foot-pounds, pound-force, or kiloNewtons does not conform to the SI system. While foot-pounds is a common unit in the imperial system, it isn't applicable here. Pound-force only measures a force without relating it to distance, which is crucial in calculating torque. KiloNewtons, though it is a unit of force, does not take distance into account either and therefore cannot be used to measure torque directly.