The weight of objects on the ground is not fixed. An explorer from the equator to the North Pole, his weight will gradually increase. If he weighs 50 kilograms at the equator, he will lose about 50.25 kilograms after reaching the North Pole. This situation arises because his gravity in the Arctic is greater than the gravity he receives on the equator.
The higher the position of the object from the elevation level, the smaller the gravitational force of the Earth, and the lighter the weight. Athletes weighing 50 kilograms on the ground, if climbed to the top of Mount Everest at an altitude of 8844.43 meters, weighed about 0.14 kilograms. If the athlete is sent to an altitude of 6,371 kilometers from the ground, he weighs only 12.5 kilograms.
Gravity is vital to people’s lives. If there is no gravity, the life of nature and human beings will not be like this: rain and snow can’t fall to the ground, the river will stop flowing, the ball that kicks out will fly away, and will never fall to the ground after a light jump.