Weight vs. Mass: Explaining the Difference

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Homework Statement

Explain the difference

Relevant Equations

Classwork

In class we do Science and I have faced with the problem between Weight and mass.
Tutor told us that the weight is the force that causes everything to move.
Mass is the kg .Why then, people ask other people what weight are you?
Explain please.
Thanks

 

[Orodruin]

Why then, people ask other people what weight are you?

Because there is a difference between common parlance and scientific accuracy.

 

[phinds]

from the Internet:

Mass measures the quantity of matter regardless of both its location in the universe and the gravitational force applied to it. An object's mass is constant in all circumstances; contrast this with its weight, a force that depends on gravity.

Your mass on the Earth and the moon are identical. Your weight on the moon is about one-sixth of your weight on the earth.

 

[Doc Al]

Tutor told us that the weight is the force that causes everything to move.

Weight is the gravitational force acting on the mass. (Which may or may not start moving.)

Mass is the kg .

Mass is measured in kg, while weight is measured in Newtons.

Why then, people ask other people what weight are you?

In everyday language, folks use weight and mass interchangeably. Since you're taking physics, you now know better!

But realize that weight and mass are proportional, so in everyday use it's all good: Weight = mass*g.

 

[Orodruin]

Also note the existence of the unit kgf (kilopond or kilogram-force), which is the weight of 1 kg in standard gravity.