Although gravity maybe slightly less, and you may weigh less, your mass isn’t affected. So it would be impossible to “weigh” 2 kilos less. A kilogram is a measure of mass, so your mass is the same on the moon as on earth.
Your weight is mass x gravity. So take a person who has 100kg of mass. As you stated, at the pole he may weigh 4 pounds more.
Pole person = 220 pounds
equator person = 216 lbs
The 4 lbs difference in weight would be divided over your entire body, so i doubt you would even notice the effect.
HOWEVER, the whole thing is inconsequential because you probably wouldn’t weigh more at the poles. You actually weigh less as you approach the center of the earth, and at the center you would be weightless because you have the mass of the earth pulling on you from all directions.
If you could survive at the center of the earth, you would levitate and every direction would be “up”. So the word of an egg balancing village person means little to the laws of physics. balancing objects has to do with the center of gravity, weight has little affect anyways unless is was so heavy you couldn’t lift it.
HOWEVER, will the distance change be offset of magnitude of acceleration. Gravity is measured from the “center of mass” of objects. Because the earth rotates, you accelerate toward the center, in this case the earth’s axis and center of mass.
Weight equals mass x gravity (acceleration toward the center of an object, in this case the earth). When the earth is spinning, you have gravity and circular acceleration acting on you. at the axis, you would just have gravity, because you are on the exact axis of spinning.
To solve this dilemma you would need to weigh yourself at the equator and the True north, not the north pole. Then you would have your answer. There are so many variables in this equation you would need to account for everything. I’m sure someone somewhere has calculated it out, but it needs more proof than a balancing egg.
please correct me if i’m wrong. It’s friday evening and i’m just getting off work, i really didn’t have much time to think about it.[/quote]
The weight versus mass issue is nitpicking; the point is that the force of gravity is less at the equator. Of course you won’t notice a few kilo difference, but over the course of a lifetime, differential muscular adaptation as a result of latitude differences might be significant.