Torque

Torque is a twisting or turning force that tends to cause an
object to rotate. A force applied to the end of a lever, for
example, causes a turning effect or torque at the pivot point.
Torque (τ) is the product of force and radius (lever distance).

Torque (τ) = Force x Radius

In the English system torque is measured in pound-feet (lb-ft) or
pound-inches (lb-in). If 10 lbs of force were applied to a lever 1
foot long, for example, there would be 10 lb-ft of torque.

An increase in force or radius would result in a corresponding
increase in torque. Increasing the radius to 2 feet, for example,
results in 20 lb-ft of torque.