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Newton meter

The newton meter (Nm) is a measurement of torque. One newton meter is equal to approximately 0.738 pound-feet.

It's easy to confuse the newton meter with newton times a meter, which is a joule and a unit of energy. The difference is between a force that creates a twist, (rotates an object about some point) and a push through some distance.[1] For example, exerting a 1 N force on a door 1 m from the hinges would be a torque of 1 Nm. If an object (like a door) is pushed through a distance of 1 m with 1 N then 1 J worth of work is done. This is why the newton meter is written out specifically as Nm.[1]

For more information please see Newton meter.

References

  1. ↑ 1.0 1.1 R. D. Knight, "Work," in Physics for Scientists and Engineers: A Strategic Approach, 2nd ed. San Francisco, U.S.A.: Pearson Addison-Wesley, 2008, pp. 325–327
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