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What are the differences between the mass of an object and its weight?
|
S. No. |
Mass |
Weight |
|
I. |
Mass is the quantity of matter contained in the body. |
Weight is the force of gravity acting on the body. |
|
II. |
It is the measure of inertia of the body. |
It is the measure of gravity. |
|
III. |
Mass is a constant quantity. |
Weight is not a constant quantity. It is different at different places. |
|
IV. |
It only has magnitude. |
It has magnitude as well as direction. |
|
V. |
Its SI unit is kilogram (kg). |
Its SI unit is the same as the SI unit of force, i.e., Newton (N). |
Why is the weight of an object on the moon 
th its weight on the earth?
Let ME be the mass of the Earth and m be an object on the surface of the Earth. Let RE be the radius of the Earth. According to the universal law of gravitation, weight WE of the object on the surface of the Earth is given by,
Let 
and 
be the mass and radius of the moon. Then, according to the universal law of gravitation, weight WM of the object on the surface of the moon is given by:
Therefore, weight of an object on the moon is of its weight on the Earth.
What are the differences between the mass of an object and its weight?
weight=mass x gravitational acceleration
w = m x g
Why is the weight of an object on the moon th its weight on the earth?
Because there gravity is not so powerful and it does not have atmosphere surrounded it, which can increase friction, and that is about only 1/6th is the earth because only of one friction which is gravity.
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