NEWTON METRE

'Newton metre' is the unit of moment (torque) in the SI system. It is abbreviated 'Nm' or 'N·m', and sometimes hyphenated ''newton-metre''. It is a compound unit of torque corresponding to the torque from a force of one newton applied over a distance arm of one metre.
While a newton metre is dimensionally equivalent to a joule, the SI unit of energy and work, in a newton metre, the force and the distance ''arm'' are normal to each other, while in the joule, force and distance are co-linear. Another fundamental difference between the two is the fact that work is a scalar quantity, expressed as ''dU''=''F''•''dr'', whereas the moment of a force or torque is defined as a cross product and as such is a vector quantity.

Contents

Conversion factors

See also

Conversion factors

★ 1 joule = 1 N·m

★ 1 metre kilogram-force = 9.8065 N·m

★ 1 centimetre kilogram-force = 98.0665 mN·m

★ 1 foot-pound force (often "foot-pounds") = 1 pound-force foot (often "pound-feet") = 1.3558179 N·m

★ 1 inch ounce-force = 7.0615518 mN·m

★ 1 dyn cm = 10⁻⁷ N·m

See also

★ Foot-pound force

★ Spring scale

★ Torque