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SR_0301

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SR_0301

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$$

\vec \tau = \vec x_1 \times \vec F - \vec x_2 \times \vec F = (\vec x_1 - \vec x_2)\times \vec F

$$

and ##\vec x_1 - \vec x_2## is independent of the reference point.

You can summarize the forces acting on a system for any reference point by the total force, acting at that point, and a torque. If the total force is zero then the torque is independent of the reference point, if not it will change when you change reference. The total force is the same regardless of the reference point.

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