Exercise-10.3 Page: 138 ( Gravitation )
1. What are the differences between the mass of an object and its weight?
The differences between the mass of an object and its weight are tabulated below.
|Mass is the quantity of matter contained in the body.||Weight is the force of gravity acting on the body.|
|It is the measure of inertia of the body.||It is the measure of gravity.|
|It only has magnitude.||It has magnitude as well as direction.|
|Mass is a constant quantity.||Weight is not a constant quantity. It is different at different places.|
|Its SI unit is kilogram (kg).||Its SI unit is the same as the SI unit of force, i.e., Newton (N).|
2. Why is the weight of an object on the moon 1/6th its weight on the earth?
The moon’s mass is 1/100 times and 1/4 times the earth’s radius. As a result, when compared to earth, the gravitational attraction on the moon is about one sixth. Thus, an object’s weight on the moon is 1/6th its earth weight.
Er. Aman Blogger, Educator