When a force Facts on an object at some distance r from a point P, called the pivot point, it can cause the object to rotate rather than translate. The ability of a force to cause rotation is called the torque about P due to the force F and is symbolized by the Greek lowercase letter tau T. Torque equals the cross product between the applied force F and the distance vector r = PQ that points from P to the point Q where F acts on the object. That is, T=rxF The figure shows a wrench that is being used to turn a nut and three separate forces that could be applied to the end of the wrench. The point P is at the origin of the coordinate system and the point Q is at the end of the wrench at (0.25, 0, 0), where the forces are applied. F₁ e F₂ 45° F3
When a force Facts on an object at some distance r from a point P, called the pivot point, it can cause the object to rotate rather than translate. The ability of a force to cause rotation is called the torque about P due to the force F and is symbolized by the Greek lowercase letter tau T. Torque equals the cross product between the applied force F and the distance vector r = PQ that points from P to the point Q where F acts on the object. That is, T=rxF The figure shows a wrench that is being used to turn a nut and three separate forces that could be applied to the end of the wrench. The point P is at the origin of the coordinate system and the point Q is at the end of the wrench at (0.25, 0, 0), where the forces are applied. F₁ e F₂ 45° F3
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