As we all know Weight = Force × Acc. due to gravity and its S.I. Unit is in Newton, then when we weigh our weight in weighing machine then why does physician tells our weight in kg not in Newton ?
Answers
Yes. When we use kilograms to measure weight, we are actually referring to kgf or kilogram-force. From Wikipedia: One kilogram-force is equal to the magnitude of the force exerted by one kilogram of mass in a 9.80665 m/s2 gravitational field. In other words, the weight(force) of one kg is equal to one kgf, or 9.8N.
Answer:
Because mass and weight have been synonymous.
Explanation:
That's a pretty good question.
First, in non-scientific language, mass and weight are synonymous. This is because we can't feel mass without acceleration.
Suppose, we have a mass of 1 kg on our palm. The acceleration due to gravity is close to 0. Then, you will feel that the mass doesn't exist. We get a feel of mass on our palm when it exerts some force on your palm. Right?
Taking into consideration the physician, we may use the terms 'mass' or 'weight' with respect to him.