The weight of the world if if can be weighed?
WEIGHT is a function of only ONE thing, gravity. MASS is constant regardless of gravity. Remember, that both objects, the Earth and another object, like the Sun, BOTH exert attraction. So, to determine the weight, you have to define the gravity field the mass of the Earth is IN. As it is NOW, in orbit about the Sun, the Earth is completely weightless as is any satellite or moon about any other planet or stellar object. The Earth is in a constant state of “falling” toward the Sun. Our orbital velocity simply means the Sun pulls us toward it (as we are also att racted to the Sun), but the velocity we have means the curve of our fall matched the curve of the surface of the Sun, so we are falling, falling forever, and therefore weightless as is ANY falling object. OK, so to figure the MASS, all you need do is figure the volume, figure the average density and do the math to come up with a number…
