Question

why is the weight of an object at a higher altitude less than its weight at sea level

Answer 1

Explanation:

Since the Earth's attraction decreases as the square of the distance to its center, the weight of an object is slightly smaller at high altitude (e.g., at the top of a mountain) than at sea level, or at the equator than at the poles (because the Earth is slightly bulging).

Answer 2

Explanation:

Since the Earth's attraction decreases as the square of the distance to its center, the weight of an object is slightly smaller at high altitude (e.g., at the top of a mountain) than at sea level, or at the equator than at the poles (because the Earth is slightly bulging).