For a pivot or lever, the product of force multiplied by the perpendicular distance from the point of rotation is known as?

The concept being described is torque, which is a measure of the rotational force applied around a pivot point or axis. Torque is calculated by multiplying the amount of force applied by the perpendicular distance from the line of action of that force to the pivot point. This relationship is fundamental in understanding how forces cause rotational motion.

Torque is vital in various engineering applications, such as in engines, machinery, and even in simple tools like wrenches, where the effectiveness of the force applied increases with a greater distance from the pivot. This principle helps in designing systems that require efficient movement and rotation.

While turning moment is a term that can sometimes be used interchangeably with torque, it is not as widely recognized and may not encompass the full scope of torque's definition. Rotational force and angular momentum refer to different aspects of motion; rotational force is not a standard term used in physics, and angular momentum describes the quantity of rotation of an object based on its mass, shape, and velocity, rather than the force exerted and distance. Thus, torque is the most precise answer to the question presented.