Kilograms (kg) and newtons (N) measure different physical quantities, but they are related through Newton’s Second Law of Motion:
F=m⋅aF = m \cdot aF=m⋅a
kg measures mass.
N measures force.
On Earth, the acceleration due to gravity is approximately 9.8 m/s²9.8 \, \text{m/s²}9.8m/s².
So, the weight of a 1 kg object (force due to gravity) is:
F=1 kg×9.8 m/s²=9.8 NF = 1 \, \text{kg} \times 9.8 \, \text{m/s²} = 9.8 \, \text{N}F=1kg×9.8m/s²=9.8N In short: Mass in kilograms × gravity (9.8 m/s²) = weight in newtons.
Mass is measured in kilograms, while force is measured in newtons. The relationship is determined by Newton's second law. Force (N) equals mass (kg) multiplied by gravity's acceleration (9.8 m/s 2). On Earth, one kilogram weighs around 9.8 newtons.