What is the difference in newton and joule?

Answer 1

Newton is a measure of force, Joule is a measure of work done. Newton refers to the mechanical energy of moving matter, while joule refers to any form of energy possessed by matter.

E.g. W = f X d where W is work in joules, f is force in newtons, and d is distance in meters.

Answer 2

No, although a joule equals a newton times a meter, that is not correct. Joules are unites of energy, while newton meters are units of torque. It is dimensionally correct to multiply energy time the torque, but it just doesn't make any sense at all.

Answer 3

Yes - when used in the context of energy or work. However, the product newton x meter is also used as a unit of torque; in this case, it is unrelated to energy or work, and is simply called newton-meter.

The Nm is the unit resulting from the equation:

Work done = Force applied (N) x Linear displacement (m)

Dimensional Analysis is, as I remember, the topic we used to study in university to understand the relations between various units. There are text books on this subject.

Answer 4

Both are units of physical measure derived from fundamental units in the SI system.

'Newton' is the SI unit of force, defined as 1 kilogram-meter/second2 .

'Joule' is the SI unit for energy (or work), defined as 1 newton-meter.

Answer 5

No, a joule is a unit of energy and is one newton-meter.

A watt is a measure of power and is one joule per second, or 1 N-m/second