How did Newton define mass?

Answer 1

The joule is defined in the SI system as the work done in moving 1 meter against a force of 1 newton, so yes one newton.meter is one joule. The joule is the fundamental unit of work or energy in the mechanical sense, but it can also be equated with thermal energy via the mechanical equivalent of heat, 1 calorie = 4.1868 joules. From the above mechanical definition, the Joule has dimensions of [M] x [L2] x [T-2], since the Newton as a force has dimensions of [M] x [L] x [T-2]

Comment

Care must be taken not to confuse newton metre in the sense of work (where the force acts in the same direction as the distance travelled) with the newton metre used to measure torque (where the force acts at right angles to a radius of rotation).

Answer 2

A "Newton" is a measure of force, a "newton meter" is a measure of energy.

Answer

A newton is the SI unit for force, whereas a newton metre is the unit for torque. The SI unit for work or energy is the joule, which is numerically equal to a newton metre, ONLY when the the force acts in the same direction as the motion.

Answe2:

Scientists need to recognize that the energy is a quaternion quantity, consisting of a scalar part and a vector part. Scalar energy is called energy or work and the vector energy is called torgue. Substituting the unit Joule for scalars and Newton- meter for torque is only a further confusion. We might as well call scalar energy, work and vector energy "tork".

Energy is energy, it is time to recognize the Quaternion nature of most Physic concepts. Gravitational Energy is E = -mGM/r + mcV, a quaternion;

electrical energy is E= -e2zc/2r + mcV

*note the bold indicates vector velocity.

The term mcV, is the vector energy associated with the motion of the mass m with velocity V, vector energy Ev= cP = cmV.

Quantum Theory needs the same fix, Bosons and Fermions are the scalar and vector parts of Quaternion Quantum Theory. The Universe consists of Quaternions!

Answer 3

mass:

it is really just a measure of the amount of stuff. For a uniform material, such as water, or a uniform solid, the mass is the volume multiplied by the density---the density being defined as the mass of a unit of volume, so water, for example, has a density of one gram per cubic centimeter, or sixty-two pounds per cubic foot.

Answer 4

No because a Newton-meter is what measures Newtons. Newton is the name given to a force and a Newton-meter is how you measure the force.

AnswerIf your spelling of 'meter' is British English, then a meter is a measuring device -so a newton meteris a device for measuring force in newtons.

If your spelling of 'meter' is in US English, then it could be either a device for measuring force, or the unit of force itself (spelt 'metre' in British English)!

Assuming the latter, then a newton is the SI unit of force, whereas a newton meter (US English) or newton metre (British English) is the SI unit of torque.

To complicate matters further, the newton metre is also equivalent to the joule, which is the SI unit of energy or work.

So the answer is 'no'! And, I guess this illustrates how the US spelling can lead to confusion!!!!!

Answer 5

Newton is used to measure force (this includes weight); not mass.

Mass can be determined through its inertia - if an object has a lot of mass (for example, a large ship), it takes a lot of force to make it move - or to stop it from moving.

On Earth, mass and weight are proportional. Objects that have more mass, also weigh more. But consider the following. On Earth, an object that has a mass of 1 kg. would weigh about 10 Newton; on the Moon (less gravity), it would weigh about 1.6 Newton. The mass, however, doesn't change - if the object hits you on the head with a certain speed (on the Moon), it can still knock you out; that is, it still has inertia, and therefore mass.

Answer 6

A newton is a measurement. A newton Meter is something you use to get that measurement.

Answer 7

Newton's first law of motion doesn't involve mass at all.