The joule is a derived unit defined as the work done, or energy required, to exert a force of one newton for a distance of one meter, so the same quantity may be referred to as a newton meter or newton-meter (also with metre spelling), with the symbol N·m or N m. It can also be written as kg·m2·s−2.
What is the correct unit for joule?
joule, unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre. Named in honour of the English physicist James Prescott Joule, it equals 107 ergs, or approximately 0.7377 foot-pounds.
Can nm be written as joule?
The newton-metre (also newton metre or newton meter; symbol N⋅m or N m) is a unit of torque (also called moment) in the SI system. ... However, since torque represents energy transferred or expended per angle of revolution, one newton-metre of torque is equivalent to one joule per radian.
