Answers

Gravitation

Amit buys few grams of gold at the poles as per the instruction of one of his friends. He hands over the same when he meets him at the equator. Will the friend agree with the weight of gold bought? If not, why? [Hint: The value of g is greater at thepoles than at the equator.]

10/11/2024

Science

9th

Answers

No, Amit’s friend will likely not agree with the weight of the gold. Since the acceleration due to gravity (g) is greater at the poles than at the equator, the same mass of gold will weigh more at the poles. Therefore, when Amit’s friend weighs the gold at the equator, it will weigh less, and he will not agree with the weight initially purchased at the poles.
Explanation:
Weight vs. Mass:
Weight is a force that measures the pull of gravity on an object. It’s calculated as mass (m) multiplied by the acceleration due to gravity (g).
Gravity and Location:
The value of ‘g’ is slightly higher at the poles (closer to the Earth’s core) compared to the equator (further from the core).
Weight Difference:
Because ‘g’ is higher at the poles, the weight of the gold (mg) will be greater at the poles. When the gold is moved to the equator, the lower value of ‘g’ there will result in a lower weight, even though the mass of the gold remains the same.

Nandita Jhajhria

28/04/2025