Yesterday’s Problem:
The earth is not a perfect sphere. It is a bit flat at the top and it bulges at the equator. It is a bit fat in the middle (like some of us beings).
Given this information (which really is true – no joke here) can you work out where you weigh more – at the North Pole, at the South Pole or at the equator?
Answer:
Your weight is a measure of the gravitational pull of the earth’s mass upon your body. The closer you are to the earth’s center of mass, the more strongly you will feel its pull.
Because of the earth’s bulge then, you weight about .5% less at the equator than you do at either of the poles.
Today’s Problem:
Can you measure your weight anywhere in the universe using a spring scale?