Chapter 09 Gravitation Questions-03
Questions
1. What are the differences between the mass of an object and its weight?
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Answer
| Mass | Weight |
|---|---|
| Mass is the quantity of matter contained in the body | Weigh is the gravitational force acting on the body |
| It is the measure of inertia of the body | It is the measure of gravity |
| It is a constant quantity for any object. | Weight of an object is not a constant quantity it is different at different laces. |
| It is a scalar quantity and only only has magnitude | It is a vector quantity as it has both magnitude and direction. |
| SI unit of mass is $Kg$ | Its SI unit is N (newton) same as the SI unit of force. |
2. Why is the weight of an object on the moon $\frac{1}{6}$ th its weight on the earth?
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Answer
Gravity is directly related to mass. The more mass an object has, the more gravitational pull it has.
Now, the moon is significantly smaller than the earth (in fact, it is about the size of the earth’s core). Gravity is dependent on the size of the object. Your weight on the moon is $1 / 6$ of that on earth because the moon has $1 / 6$ the mass of the earth.
