Newton-meters (N*m)

Definition

Newton-meters, also known as joules, are the units used to measure torque or rotational force. It represents the amount of force applied at a distance from a pivot point.

Analogy

Imagine you're using a wrench to tighten a bolt. The longer the wrench, the more leverage you have and the easier it is to turn the bolt. Similarly, in physics, when you apply a force at a greater distance from the pivot point, you generate more torque or rotational force.

Related terms

Torque: Torque refers to the twisting or turning effect produced by a force acting on an object's rotation. It depends on both the magnitude of the force and its distance from the axis of rotation.

Lever Arm: The lever arm is the perpendicular distance between an axis of rotation and where a force is applied. It determines how much torque can be generated for a given force.

Moment of Inertia: Moment of inertia measures an object's resistance to changes in its rotational motion. It depends on both mass distribution and shape.