Question

Mehul thought of going around the world in 80 days. He starts from India and covered the equatorial belt then moves to polar region. He had some queer experiences and he is confused about the question arising in his mind.

ABOUT WEIGHT? ABOUT MASS?

1 . He feels change in body weight as he moves from equator to poles. Suggest what do you think about his feeling.

(a) His body weight is higher in poles than the equator
(b) His body weight is lower in poles than the equator
(c) His body weight is not change in any condition
(d) None of these

2. Mehul thinks deeply whether his mass or weight changes when he moves from equator to pole?

(a) Mass
(b) weight
(c) both
(d) no change

3. You are moving from Colombia to Canada , your weight is going to…………………

(a) Increase
(b) decrease
(c) Remain same
(d) none of these

4. The measurement of gravitational force was given by which scientist.
(a). Pascal.
(b). Newton.
(c) Archimedes.
(d). none of this.

5. Give the position on earth where weight of elephant and weight of Ant is equal.

Please Answer
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Answer 1

The answers of the given questions are as follows -

• His body weight is higher in poles than the equator. The where is the multiplication of the mass of the body and the value of gravitational acceleration of a place. Now, the mass remains constant in every situation, but the gravitational acceleration sensor with the location. The value of the gravitational acceleration is maximum at the poles. So, the value of the weight of any object will be greater at the poles than the equator.
• Here, the weight is changing due to the change of gravitational acceleration. Mass remains constant always.
• The Canada is nearer to the poles as compared to the Columbia. So, the weight in Canada will be greater than the weight in Columbia.
• The measurement of the gravitational force was invented by Sir Isaac Newton.
• In the centre of the earth, the value of the gravitational acceleration is zero, and that's why the weight here is also zero. This zero weight is applicable for both a large elephant and a small ant. Although, their mass differences will be still there.