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Though J = N . m, it is a useful practice to reserve joule for energy and work and to use newton metre as a unit for torque. This helps to distinct between two completely different quantities.
It is in accordance with the official SI brochure (The International System of Units (SI); 8th edition) which says: "In practice, with certain quantities, preference is given to the use of certain special unit names, or combination of unit names, to facilitate the distinction between different quantities having the same dimension."
Another Answer
The newton metre, used to measure torque, is not related to the joule.
Torque and work are two different things.
Torque is a turning moment: the product of a radius and a force acting perpendicular to that force, and the resulting unit is the newton metre.
Work, on the other hand. is the product of a forceand the distance moved in the same direction of that force, resulting in the newton metre. But, in the case of force, SI gives a special name to this compound unit, the joule.
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What is the s.i of torque?
Joule , the energy unit is the unit for Torque. Torque is vector energy.AnswerThe SI unit for torque is the newton metre(N.m). This should not be confused with the joule (which is a special name for a newton metre), the SI unit for work.With torque, the force (in newtons) acts at right angles to a radius (in metres) to produce a turning moment. With work, the force (in newtons) acts in the same direction as distance travelled (in metres).To calculate the work done by a given torque, it's necessary to multiply the force by the circumference through which the force acts.
What is the s.i unit of torque?
Joule , the energy unit is the unit for Torque. Torque is vector energy.AnswerThe SI unit for torque is the newton metre(N.m). This should not be confused with the joule (which is a special name for a newton metre), the SI unit for work.With torque, the force (in newtons) acts at right angles to a radius (in metres) to produce a turning moment. With work, the force (in newtons) acts in the same direction as distance travelled (in metres).To calculate the work done by a given torque, it's necessary to multiply the force by the circumference through which the force acts.
What unit is represented by joule per coulomb?
In SI, the 'volt' is a special name given to a joule per coulomb.
Which SI unit for energy is also called the newton-meter?
The SI unit for energy that is also called a newton-meter is the Joule. It is defined as the work done by a force of one newton acting through a distance of one meter.
What are the differences between a joule and a watt?
A joule is a unit of energy, representing the ability to do work. A watt, on the other hand, is a unit of power, representing the rate at which energy is transferred or converted. One joule is equal to one watt-second.
Is the joule the si unit?
The joule is an SI unit!
Did James Prescott Joule's last name have anything to do with joules?
No, James Prescott Joule's last name did not have anything to do with the unit of energy called joules. The joule unit was named in honor of his contributions to the field of physics, particularly in the study of heat and energy.
What is the units for joule?
The joule is an SI unit!
The SI unit for energy is the what?
The SI unit for energy is the joule (J).
The unit of work is the?
The same as the SI unit for energy - the joule.The same as the SI unit for energy - the joule.The same as the SI unit for energy - the joule.The same as the SI unit for energy - the joule.
A unit of energy is the unit of what?
A unit of energy is the unit of work or heat. It measures the capacity of a system to do work or produce heat. The standard unit of energy is the joule.
The SI unit of electrical mechanical and thermal energy?
The SI unit of electrical energy is the joule (J), the SI unit of mechanical energy is also the joule (J), and the SI unit of thermal energy is the joule (J).
