Torque

A torque (τ) in physics is a vector that measures the tendency of a force to rotate an object about some axis (center). The magnitude of a torque is defined as the product of a force and the length of the lever arm (radius). Just as a force is a push or a pull, a torque can be thought of as a twist.



http://en.wikipedia.org/wiki/Torque http://www.flowmeterdirectory.com/sensor_terminology_a.html http://www.physics.uoguelph.ca/tutorials/torque/Q.torque.intro.html

SAM