Torque is the tendency of a force to rotate an object about an axis(or fulcrum or pivot). Just as a force is a push or a pull, a torque can be thought of as a twist.
The symbol for torque is τ.
Torque is also called moment or moment of force. This should neither be confused with the various other definitions of "moment" in physics nor with "momentum".
In the context of mechanical engineering, the terms "moment" and "torque" are not necessarily interchangeable; rather, one or the other may be preferred in a specific context.
For example, "torque" is usually used to describe a rotational force down a shaft, for example a turning screw-driver, whereas "moment" is more often used to describe a bending force on a beam.
Frankly speaking, I still don't know what is the principle of moment but I think I get a brief idea of what it is about.
More on : http://en.wikipedia.org/wiki/Torque
The symbol for torque is τ.
Torque is also called moment or moment of force. This should neither be confused with the various other definitions of "moment" in physics nor with "momentum".
In the context of mechanical engineering, the terms "moment" and "torque" are not necessarily interchangeable; rather, one or the other may be preferred in a specific context.
For example, "torque" is usually used to describe a rotational force down a shaft, for example a turning screw-driver, whereas "moment" is more often used to describe a bending force on a beam.
Frankly speaking, I still don't know what is the principle of moment but I think I get a brief idea of what it is about.
More on : http://en.wikipedia.org/wiki/Torque
