The Newton meter (Nm) is a unit of torque and rotational energy in the International System of Units (SI), defined as the torque produced by a one-newton force applied perpendicularly to a one-meter-long moment arm. It measures the rotational force that causes an object to turn around a pivot point. The Newton meter's symbol is Nm, and it is widely used in engineering, physics, and mechanics to express rotational forces and energies. In practical contexts, Newton meters are crucial in applications such as engine design, where they measure engine torque, and in biomechanics, where they assess joint torques. In scientific research, accurate measurement of torque in Newton meters is essential for studying rotational motion, designing mechanical systems, and ensuring safety and efficiency in various industrial processes.