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Torque, moment, or moment of force is rotational force. Just as a linear force is a push or a pull, a torque can be thought of as a twist to an object. In three dimensions, the torque is a pseudovector; for point particles, it is given by the cross product of the position vector and the force vector.

### Defining terminology

### Definition and relation to angular momentum

### Units

### Machine torque

### Relationship between torque, power, and energy

### Principle of moments