Question

Which is not a unit of weight ?

• A. Kilogram (Kg)
• B. Newton (N)
• C. Kg m/s²
• D. None of these

Answer 1

Answer:

A. Kilogram (Kg)

• Weight is a force due to gravity ($W = mg$), meaning its proper scientific unit is a measure of force.

• Newton (N) is the standard SI unit of force and weight.

• $\text{Kg}\cdot\text{m/s}^2$ is the dimensional equivalent of a Newton ($1\text{ N} = 1\text{ kg}\cdot\text{m/s}^2$) derived from Newton's second law ($F = ma$).

• Kilogram (Kg) is strictly the SI unit of mass, not weight. While mass remains constant everywhere, weight varies depending on the gravitational field strength.