What unit is used to measure torque in mechanical applications?

Torque is a measure of the rotational force applied to an object, and the standard unit used to quantify torque in mechanical applications is the Newton-metre (Nm). This unit reflects the force applied (in Newtons) at a distance (in metres) from a pivot point. When you apply a force to a lever arm, the torque produced is a product of that force and the distance from the pivot to the point where the force is applied.

Using Newton-metres allows engineers and technicians to communicate and calculate the effects of torques in various mechanical systems accurately. This is crucial in engineering applications, such as in the design of motors, gears, and structural elements, where the ability to control and measure torque is essential for safe and efficient operation.

The other options provided represent different physical quantities: Watts measure power, Pascals measure pressure, and Newtons per meter are not a standard unit for torque. Understanding these distinctions is key when dealing with various engineering concepts and their measurements.