Question

Name and define the unit of force in SI system?

Answer 1

1. A force, which produces a unit acceleration in a body of unit mass, is called the absolute unit of force.
2. In the SI system, the absolute unit of force is called Newton (N).
3. A force, which produces an acceleration of 1 m/s² in a body of mass 1 kilogram, is called one Newton.
4. The force, which produces an acceleration equal to that of gravity of the Earth in a body of unit mass, is called the gravitational unit of force.
5. In the SI system, the gravitational unit of force is kilogram-force (kgf).
6. A force, which produces an acceleration of gravity (9.8 um/s²) in a body of mass 1 kilogram, is called the kilogram-force.